Saturday's Antofagasta semifinal pits Lautaro Midon against Thiago Seyboth Wild on clay. Thiago Seyboth Wild is rolling — 10 straight wins, 10 of 10 in recent play. Lautaro Midon has won 3 in a row and 7 of the last 10 overall.

The serve is where this match separates: Wild has been winning 68.8% of first-serve points to Midon's 63.8%, and on clay that gap compounds fast. Midon comes in off a compressed schedule; Wild comes in off a compressed schedule. The edge belongs to Wild — real, but not the kind you take for granted at this level.