Saturday's Montreal round of 32 pits Learner Tien against Tommy Paul on hard. Tommy Paul limps in on a 2-match losing skid, just 6 wins in 10. Learner Tien limps in on a 2-match losing skid, just 6 wins in 10.
On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. A tiebreak or two would surprise nobody, with Paul fractionally more likely to land the big points.