Dimitrov won their only previous meeting. That was in Stockholm in October 2013. They were on an indoor hard court and Dimitrov won in straight sets.
Struff has better clay stats. This season he has played 6 matches on clay and won 5 of them. In the last 12 months he played 35 matches on this surface and won 27.
This is Dimi’s weakest surface. However he doesn’t have a bad record in Monte Carlo. He reached the q final in 2015. His only match on clay this year was against Robredo last week. He lost in 3 sets. In the last 12 months he played only 8 matches on clay and lost 5 of them.
Value on Struff to take a set. Lay Dimi below 1.25