Struff @ 1.72 is great value, should be @ 1.50 at the highest if you compare both guy's season on clay. Cannot believe how overrated Shapolav is.
I see Pinnacle even opened Struff @ 1.87, not sure why.
Of course it's not a guaranteed win but Struff has a big game and is playing his best tennis on clay lately, Shapolav on the other hand is still fragile and very inconsistent.