Best Bets 

Philippe Kohlschreiber is a former quarter finalist at Wimbledon, though he hasn't made it past the early rounds in recent years, while Kevin Anderson is the more consistent at this Grand Slam, reaching the fourth round in three of the last four years. 

It's Kohlschreiber that has the better record on grass, winning 62.4% of matches, while Anderson has a 59.7% record on the surface. 

The price on Anderson is more to do with his playing style, with his big serve and forehand but his movement can often be exposed on the grass. 

Kohlschreiber beat the dangerous Gilles Muller convincingly in the last round, so with confidence high I feel there is value on the German.

Philippe Kohlschreiber - 1pt @ 12/5

Both of these players had long matches in round two, with Mackensie Mcdonald winning a marathon fifth set against the talented Nicolas Jarry and Guido Pella taking out Marin Cilic. 

Pella's result was more of a freak though, with the Argentinean never having won a main draw match at Wimbledon until this year. 

His unsuitability to this surace means he's only played 17 grass court matches in a 12 year career and has a win rate of 40%. 

The young American's game is far more suited to grass than Pella's and I think he'll have enough to win this one, despite his aforementioned long match against Jarry.

Mackensie Mcdonald - 1pt @ 6/5