Diego Dedura and Felipe Meligeni Alves meet in the round of 16 at Cali on Thursday. Diego Dedura is 4-6 across recent matches. Felipe Meligeni Alves has won 4 of the last 10.

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 Dedura is exactly that — a lean.