Roger Federer has never faced an opponent at Wimbledon quite like this.

The seven-time champion — perhaps the greatest player of all time — has a second-round match on Centre Court on Wednesday against a 772nd-ranked British qualifier who had never won a tour-level match until Monday.

Marcus Willis, 25, is the lowest-ranked qualifier to reach the second round of a Grand Slam since 1988. He gives tennis lessons at a club in central England and was only recently talked out of giving up on his goal of making it on the pro tour by his girlfriend.

Now, Willis gets to face Federer on the most famous court in tennis.

Up first on Centre Court will be third-seeded women's player Agnieszka Radwanska against Kateryna Kozlova. Then comes defending men's champion Novak Djokovic against Adrian Mannarino.