Vilius Gaubas vs Sebastian Baez — R128 — Madrid Open

Vilius Gaubas, ranked #124, knocked out #64 Sebastian Baez 7-5, 6-1 in the pair's first meeting by winning the second-serve battle that Baez couldn't survive — 59% of his second-serve points to the Argentine's 42%. Once Gaubas cracked the first set 7-5, Baez's serve collapsed: three double faults, just 42% on second-return points, and a 6-1 second set in which he took 13 of 19 games overall. Baez's 28 unforced errors handed it over on clay he should have owned.