- There can rarely have been such a contrast between the records of two competitors as there is with Federer and Willis. Federer has won seven Wimbledon titles, 17 Grand Slams and is reportedly worth more than $350 million, while Willis has earned less than £300 from tennis this year and is only the 23rd highest-ranked player in Britain.
- Mahut and Ferrer are far more closely matched. Mahut won the recent grass-court event in 's-Hertogenbosch and came through his first-round tie against Brydan Klein in straight sets. Fellow 34-year-old Ferrer has slipped out of the world’s top ten this year following some disappointing results, but dropped just four games in his first-round victory over Dudi Sela.
- Wawrinka mounted a strong defence of his French Open title but was beaten in the semi-finals by Murray, and then suffered a surprise defeat by Fernando Verdasco in the first round at Queen’s Club. Del Potro has not played a Grand Slam since the 2014 Australian Open due to injury, but has a 3-2 record in head-to-heads against Wawrinka.
It must be a dream come true just for Willis to face Federer and odds of 25/1 on a surprise win for him reflect the chasm between the two. However, while it would be unquestionably the biggest upset in Wimbledon history for Willis to win the match, there might be some value in backing the British player with a sizeable head-start in the games handicap market. He may be several leagues below Federer in terms of class, but he will be well and truly match-hardened after having to win three matches just to get into the main qualifying draw last week. Federer, on the other hand, is only just coming back from a long injury lay-off and was not quite at his imperious best against Guido Pella in the first round, so backing Willis at 8/11 with a games handicap of +9.5 looks a decent punt.
Only seven men have won Grand Slam titles in the last decade and two of them meet in the second round as Wawrinka locks horns with Del Potro, who is still working his way back to full fitness following multiple wrist operations. Del Potro, who has been away from Wimbledon since taking Djokovic to five sets in the 2013 semi-finals, is still very solid even if he has lost a lot of power on his backhand side. A long match would probably favour Wawrinka so a 3-2 victory might be the way to go at 5/1.
Brown’s clash with Kyrgios could be even more entertaining as it pits together two very flamboyant characters. Brown stunned Rafael Nadal in the second round last year and is likely to show flashes of brilliance, but Kyrgios’ superior power should see him through in three or four sets. The likes of Djokovic and Murray should not have any problems, but Mahut’s encounter against Ferrer has all the hallmarks of an epic and a five-set thriller could be on the cards at 5/2.
- Sports.net’s top tip: Marcus Willis - Games handicap of +9.5 against Roger Federer: 8/11
*Please note, odds may fluctuate before the matches start