Hugo Gaston and Karen Khachanov meet in the round of 32 at Hamburg on Tuesday. Karen Khachanov has won 5 of the last 10. Hugo Gaston is searching for form, having lost 4 in a row (2 of the last 10).
Karen Khachanov has had the better of this rivalry, winning 1 of 1 against Hugo Gaston. On clay specifically it reads 1-0 Khachanov — worth more than the overall number this week.
Khachanov's 72.1% behind the first serve (against 65.7% for Gaston) means break chances should be scarce in one direction. Anything other than a Khachanov win would rank among the bigger surprises of the week.