Tuesday's Montreal first round pits Lorenzo Sonego against Tallon Griekspoor on hard. Tallon Griekspoor is searching for form, having lost 4 in a row (3 of the last 10). Lorenzo Sonego is 5-5 across recent matches.

On paper it's close: comparable ratings, comparable serve numbers, small margins everywhere. This one is close to a coin flip, and the lean toward Griekspoor is exactly that — a lean.