They are tied at 4-4 in their previous matches. They last met in August 2015 at the US Open and Wawrinka won in straight sets. Anderson has won 4 of their last 5 matches. Tie breaks have featured heavily in their matches.
Anderson has been struggling this season but he served well to beat Tomic in 3 sets in the last round. He was broken once in 3 sets.
Three of Wawrinka’s 4 sets this week have been tie breaks. Youzhny broken him twice in their two tie break sets but Sock was not able to take any of his 3 break chances. Wawrinka won 70% if points on both his 1st and 2nd serves yesterday.
I can see this being a tight match and we could easily see 3 sets. I’d expect Wawrinka to win as he will play the really big points well.
Back him if he loses set 1. If he gets broken late in the set it could be worth backing him straight away