Today at 9 a.m. ET, No. 1 Novak Djokovic and No. 2 Roger Federer do battle in the 2015 Wimbledon finals.

This is a rematch of last year's final, which saw Djokovic knock off Federer after five tighlty-contested rounds to earn his seventh Grand Slam title and his second Wimbledon victory.

Federer enters with 17 titles on his resume, but would love to knock off his foe for one more.

The 2015 Wimbledon men's singles final can be live streamed for free here.

Djokovic eliminated No. 21 Richard Gasquet, 7-6(2), 6-4, 6-4 to advance while Federer knocked off No. 3 Andy Murray 7-5, 7-5, 6-4.

Federer was very happy with his performance in the semifinals and likely has a chip on his shoulder heading into Sunday's match.

"It's definitely one of the best matches I've played in my career," Federer said, according to CNN. "It's an amazing feeling when you come back from the match and everybody's so happy for you -- even like in the Royal Box when I was walking back, there was applause all the way to the locker room."

Djokovic may have won the title a year ago, but he knows he has a formiddable foe in Federer, who seems to thrive at Wimbledon and comes in with something to prove after last year.

"This is where he loves to play. This is where he plays his best tennis, I think. It's his court," said Djokovic per CNN. "It was a very important match for me to win last year because I've lost quite a few grand slam finals. To win that match in five sets against Roger on grass was definitely something that gave me a lot of confidence."

It's as exciting as it gets, No. 1 vs. No. 2 when Djokovic and Federer reignite their rivalry in the men's tennis Wimbledon final.