Struff 3.50, Tsonga 1.38
Tsonga has won all 3 of their previous matches. Their last meeting was at the French Open in May 2016. He won in straight sets on clay. He won their only indoor match in 2014, 2 tight sets.
Tsonga has won 12 of 13 indoors this season. He won consecutive titles in February. He has not been at his best lately and needed 3 sets to get past Sousa in the last round. He only faced 3 break points and was broken just once which was enough to lose him the second set.
Struff has played very well this week. He lost his opening set of the week to Coric but since then his serve has been more solid. He faced 13 break points against Fabbiano in the last round but was only broken twice.
I can see this going to 3 sets so we have some value on Struff. Lay Tsonga around 1.25 and remove liability if he gets broken.