WATCH: Nadal's Amazing Overhead Winner

On opening day of the 2013 U.S. Open, Rafael Nadal set the bar very, very high for "best shot of the tournament."

"That might be the shot of the tournament already," said the announcer.

PHOTOS: 2013 U.S. Open Day 1

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Francesca Schiavone of Italy hugs a ball boy during her first round women's singles match against Serena Williams of the United States of America on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Francesca Schiavone of Italy hugs a ball boy during her first round women's singles match against Serena Williams of the United States of America on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

TEN-US-OPEN-WILLIAMS-SCHIAVNONE

US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013        (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013 (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

TEN-US-OPEN-WILLIAMS-SCHIAVNONE

US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013        (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013 (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

Francesca Schiavone

Francesca Schiavone, of Italy, returns to Serena Williams, of the United States, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)
Francesca Schiavone, of Italy, returns to Serena Williams, of the United States, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States shakes hands with  Francesca Schiavone of Italy after their first round women's singles match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

TEN-US-OPEN-WILLIAMS-SCHIAVNONE

US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013        (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
US tennis player Serena Williams returns a point to Italy's Francesca Schiavone during their 2013 US Open women's singles match at the USTA Billie Jean King National Tennis Center in New York on August 26 , 2013 (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Francesca Schiavone of Italy waves to the crowd after losing to Serena Williams of the United States in their first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America plays a backhand against Francesca Schiavone of Italy during their women's singles first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America plays a backhand against Francesca Schiavone of Italy during their women's singles first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

Polona Hercog

Slovenia's Polona Hercog returns a shot to Ekaterina Makarova, of Russia, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Slovenia's Polona Hercog returns a shot to Ekaterina Makarova, of Russia, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America looks on during her women's singles first round match against Francesca Schiavone of Italy on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America celebrates a point during her women's singles first round match against Francesca Schiavone of Italy on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

Agnieszka Radwanska

Agnieszka Radwanska, of Poland, serves to Spain's Silvia Soler-Espinosa in the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/David Goldman)
Agnieszka Radwanska, of Poland, serves to Spain's Silvia Soler-Espinosa in the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/David Goldman)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America plays a forehand against Francesca Schiavone of Italy during their women's singles first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Francesca Schiavone of Italy plays a backhand against Serena Williams of the United States of America during their women's singles first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26: The shoes of Serena Williams of the United States of America seen during her women's singles first round match against Francesca Schiavone of Italy on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America looks on during her women's singles first round match against Francesca Schiavone of Italy on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Matthew Stockman/Getty Images)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  Serena Williams of the United States of America plays a backhand against Francesca Schiavone of Italy during their women's singles first round match on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)

Lucie Hradecka

Czech Republic's Lucie Hradecka wipes her face during a match against Angelique Kerber, of Germany, in an opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Czech Republic's Lucie Hradecka wipes her face during a match against Angelique Kerber, of Germany, in an opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

2013 US Open - Day 1

NEW YORK, NY - AUGUST 26:  The shoes of Serena Williams of the United States of America seen during her women's singles first round match against Francesca Schiavone of Italy on Day One of the 2013 US Open at USTA Billie Jean King National Tennis Center on August 26, 2013 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Elsa/Getty Images)

Serena Williams

Serena Williams, of the United States, looks up at the scoreboard during her match against Francesca Schiavone, of Italy, in the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)
Serena Williams, of the United States, looks up at the scoreboard during her match against Francesca Schiavone, of Italy, in the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)

Angelique Kerber

Angelique Kerber, of Germany, reacts after defeating Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Angelique Kerber, of Germany, reacts after defeating Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Serena Williams

Serena Williams, of the United States, returns against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)
Serena Williams, of the United States, returns against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)

Serena Williams

Serena Williams, of the United States, pumps her fist after winning a point against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)
Serena Williams, of the United States, pumps her fist after winning a point against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)

Angelique Kerber

Angelique Kerber, of Germany, returns a shot to Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Angelique Kerber, of Germany, returns a shot to Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Angelique Kerber

Angelique Kerber, of Germany, returns a shot to Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Angelique Kerber, of Germany, returns a shot to Czech Republic's Lucie Hradecka during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Jelena Jankovic

Serbia's Jelena Jankovic returns a shot to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Serbia's Jelena Jankovic returns a shot to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Jelena Jankovic

Serbia's Jelena Jankovic serves to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Serbia's Jelena Jankovic serves to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Polona Hercog

Slovenia's Polona Hercog returns a shot to Ekaterina Makarova, of Russia, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Slovenia's Polona Hercog returns a shot to Ekaterina Makarova, of Russia, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)

Ekaterina Makarova,

Ekaterina Makarova, of Russia, returns a shot to Slovenia's Polona Hercog during the first round of the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Ekaterina Makarova, of Russia, returns a shot to Slovenia's Polona Hercog during the first round of the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
A ball runner dries the lines on the court during brief rain delay of the first round match between Rafael Nadal of Spain and Ryan Harrison at the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/David Goldman)
A ball runner dries the lines on the court during brief rain delay of the first round match between Rafael Nadal of Spain and Ryan Harrison at the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/David Goldman)

Jelena Jankovic

Serbia's Jelena Jankovic returns a shot to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Serbia's Jelena Jankovic returns a shot to Madison Keys during the opening round of the U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Darron Cummings)
Tommy Robredo of Spain returns against Matosevic of Australia during the first round of the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Kathy Kmonicek)
Tommy Robredo of Spain returns against Matosevic of Australia during the first round of the 2013 U.S. Open tennis tournament Monday, Aug. 26, 2013, in New York. (AP Photo/Kathy Kmonicek)

Serena Williams

Serena Williams, of the United States, pumps her fist after winning a point against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)
Serena Williams, of the United States, pumps her fist after winning a point against Francesca Schiavone, of Italy, during the first round of the 2013 U.S. Open tennis tournament, Monday, Aug. 26, 2013, in New York. (AP Photo/Charles Krupa)

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