J Sock 4/9 to defeat J Monaco - Could be a tough match but think Jack may just have too much in Houston and should get the crowd behind him. Juan though is a former champion so will have his supporters and is still capable and wants to break back into ATP top 100
E Vesnina 11/8 to defeat S Stephens - Big clash in Charleston and a big opportunity. Both powerful but I think Elena could well get the win today. She will want revenge for Sloane defeating her friend Kasatkina in the QFs and will use her doubles skills to mix it up against Sloane. The American needs to be confident and go for her shots and take the first ball she gets.
D Cibulkova 4/6 to defeat C Giorgi - Tough match to call. I think Domi may well just be the more consistent in her game and although Camila has had a very good week I think her serve will be the key and under pressure she could struggle.
S Kozlov 13/8 to defeat M Jaziri - I think it is time for the young American to make his name and breakthrough in 2016. Jaziri beat Fritz in the last round but I think Kozlov is super confident this week and worth a punt.
D Shapovalov 10/11 to defeat T Sandgren - Another young player in great form and super confident. His big serve and game could well cause the more experienced American some problems. However Denis is still very young and could easily find nerves play a part