Over 19.5 games
The Diatchenko/Silva vs. Haverlag/Waltert match could see a competitive total games count. Based on recent form, Diatchenko/Silva's semifinal win (6-6) suggests high-scoring potential, while Haverlag/Waltert's 6-6 result indicates similar intensity. Assuming a three-set match, total games could range from 20-26. Betting on over 19.5 games seems reasonable, given their recent performances and likelihood of tight sets.