Ok, change of mind. Going to start early,
£100 on Del Potro to beat Querrey @ 1.23 returns £123
Ok, I wish I didn't do it now, have to go through a whole new security check with Betfair because it is placed with the Austrailians or something like that.
Got £25 on Nalbandian to win the 2nd set against Gasquet, wish I had that as the main bet now, don't really want to deal with this hassle.