US Open Tennis 2015: Predictions, Live Stream for Sunday Night's Bracket

Novak Djokovic is getting close to the most important rounds of the U.S. Open. If he can win his Sunday night matchup with Spain's Roberto Bautista Agut, the top-seeded player in the tournament will be on to the quarterfinals.

Djokovic is the headliner of the Sunday night matchups in New York. He has been sharp in winning his first three matches of the tournament, beating all three opponents in straight sets.

As well as Djokovic has played in beating Joao Souza, Andreas Haider-Maurer and Andreas Seppi, he is probably going to have to pick his game up a notch if he is going to defend the title he won a year ago and also pick up his third Grand Slam title of the year.

"

Later tonight Novak Djokovic bidding to reach QFs at a major for the 26th consecutive time. All-time leaders: Federer (36) Connors (27)

— TennisNow (@Tennis_Now) September 6, 2015"

That's because No. 2 seed Roger Federer seems to be at his peak right now. Federer has also mowed down three straight opponents, and he has done it in easier fashion than Djokovic.

Here's a look at the viewing information as well as predictions for Sunday night:

Player	Opponent	Venue	Time	TV/Livestream	Prediction
Novak Djokovic (1)	Roberto Bautista Agut (23)	Arthur Ashe	7 p.m.	ESPN2/ESPN3	Djokovic
Eugenie Bouchard (25)	Roberta Vinci	Louis Armstrong	6:30 p.m.	ESPN2/ESPN3	Vinci*
Ekaterina Makarova (13)	Kristina Mladenovic	Arthur Ashe	9:30 p.m.	ESPN2/ESPN3	Makarova

Federer's serve has been magnificent. He did not lose a game on his serve in winning the Western and Southern Open in Cincinnati last month, and while he finally lost a game on his serve to Philipp Kohlschreiber in his third-round match Saturday night, he still won his match with ease, 6-3, 6-4, 6-4.

Djokovic's opponent has been quite effective through his first three matches. The 27-year-old is seeded 23rd in the tournament, and he has beaten Pierre-Hugues Herbert, Pablo Carreno Busta and 14th-seeded David Goffin.

Bautista Agut had lost the first two sets to Goffin, but he reversed the match with a 6-3 victory in the third set and took a 3-1 lead in the fourth when Goffin had to retire.

Bautista Agut has a solid all-around game, and he has recorded a 21-15 match record this year. However, Djokovic has raised his match record to 44-3 this year with his first three victories in the U.S. Open. Djokovic's athleticism, inventiveness and power will make him difficult for Bautista Agut to battle in a best-of-five match.

Jean Catuffe/Getty Images

On the women's side, 25th-seeded Eugenie Bouchard of Canada had seemingly rediscovered her confidence at the right time. After a disappointing showing throughout much of the 2015 season, she won her first three matches and could have earned a spot in the quarterfinals if she could have beaten Italy's Roberta Vinci.

However, she is unable to compete and had to withdraw after taking a fall in the locker room Saturday, per the Associated Press (via ESPN.com). 

"

Eugenie Bouchard withdraws from US Open with concussion http://t.co/EtaWqrIc0p

— ESPNTennis (@ESPNTennis) September 6, 2015"

Bouchard made a name for herself when she got to the Wimbledon Final in 2014, where she lost to Petra Kvitova, but it has been a struggle this year. She came into the U.S. Open with a 9-17 match record and showed little resemblance to the up-and-coming star many thought she was becoming.

Bouchard defeated Alison Riske in straight sets in her opening match but then won two grueling three-set matches over Polona Hercog and Dominika Cibulkova to earn her spot in the fourth round. 

“This year I've had a couple matches where it's been tough to close out,” Bouchard told Stanley Kay of Sports Illustrated. “I just tried to block that out of my mind, block the outcome as well out of my mind, you know, and just keep playing tennis. Keep trying to play good tennis.”

Unfortunately, it was determined late Sunday afternoon that she couldn't continue, and Vinci moves on to the quarterfinals in a walkover.