US Open - Day 3: Djokovic, Serena, Nadal advance

Bopanna/Mergea beat Krajicek/Monroe 6-3, 6-4

Paes/Hingis win their opening match 6-2, 6-2

Bouchard moves to the third round 6-3, 6-7, 6-3

Johnson-Querrey pull off the biggest upset in men's doubles by beating the top-seeded Bryan brothers 7-6, 5-7, 6-3

Nadal beat Schwartzman 7-6, 6-3, 7-5

Feliciano Lopez beats Mardy Fish 2-6, 6-3, 1-6, 7-5, 6-3; This was Fish's final match of the career

Djokovic moves to the third round with a 6-4, 6-1, 6-2 win over Haider-Maurer

Venus Williams beat Irina Falconi 6-3, 6-7, 6-2

US Open Day 3 Round-up: Djokovic, Nadal, Serena through

Serena Williams is through to the 3rd round after grinding out a tough 7-6, 6-3 win over Kiki Bertens.

Kiki Bertens has gone from 4-1 up in the tie-break to down 5-4. Serena's done nothing except from be #serenawilliams
— Live Tennis (@livetennis) September 2, 2015

Serena and Bertens hold their opening serves. 1-1

Serena will start her match against Bertens at the Arthur Ashe stadium soon

The fabulous Fabio #Fognini show rolls on with decisive win over Pablo #Cuevas 6-3, 6-4, 6-4 #usopen
— US Open Tennis (@usopen) September 2, 2015

Marin Cilic beats Donskoy 6-2, 6-3, 7-6 to reach the second round

Verdasco takes the third set 7-6

No. 23 Roberto Bautista Agut beats fellow Spaniard Pablo Carreno Busta in five-set marathon 4-6, 6-4, 6-0, 2-6, 6-4 #usopen
— US Open Tennis (@usopen) September 2, 2015

Although #Fish jumped out to an early 4th set lead, #Lopez has rallied to even it up. Who you got winning? #usopen pic.twitter.com/sCOYbc5Pgc
— US Open Tennis (@usopen) September 2, 2015

Fish leads Lopez 6-2, 3-6, 6-1

Nice save by #Fish. Fish vs #Lopez. #usopen pic.twitter.com/GkJUUdCnFj
— US Open Tennis (@usopen) September 2, 2015

Another all-American matchup! #Brengle takes the first set vs. Tatishvili. #usopen @MBUSA http://t.co/iknPWzyU7A
— US Open Tennis (@usopen) September 2, 2015

Speedy! #Brengle dispatches of #Tatishvili 6-3, 6-2 for the first win of Day 3. #usopen
— US Open Tennis (@usopen) September 2, 2015

UPSET ALERT: No. 14 #Goffin and No. 23 #BautistaAgut both drop the first sets. #usopen
— US Open Tennis (@usopen) September 2, 2015

Madison moves on! #Keys advances in a routine 6-1, 6-2 win over #Smitkova. #usopen
— US Open Tennis (@usopen) September 2, 2015