Federer will probably win in straight sets, but the last two times he has played Lopez he has taken a set off Federer.

Lopez has a really tough serve to read and could probably take it to a tie break in one of the sets and from there it is a lottery, so I would say the $1.22 isn't very good value.

That all up is probably worth a crack - you should get a divvie of $5 plus.

If it were me I would take a saver on the Grosjean v Davydenko match, both those guys are very unpredictable and have great talent.