Jeremy Chardy vs Reilly Opelka prediction

Both players are coming off a same tournament where Opelka has quit at semi-final, Chardy lost to Tiafoe 2-1. There will be no fitness advantage for both of them. If so, It will be slightly on Opelka side who is an obvious underdog. These pair met in USA hard courts which ended by Opelka victory 3-6 7-5 7-6. Opelka is young and big server, looks very similar to another countryman John Isner. I was expecting more reasonable odds on Opelka. Chardy is not a strong breaker and Opelka is not easy gum. I looked deeply to underdog Opelka history and noticed 4 of last 5 games of bigger underdog Opelka had played solid tennis and passed through this line. I expect that at least 1 set will go tie-break and other set can bring us comfortably winner on this bet.