SAO PAULO, Brazil -- Paolo Lorenzi of Italy reached his first ATP semifinal by upsetting fourth-seeded Juan Monaco of Argentina 7-6 (6), 6-7 (4), 6-4 at the Brazil Open on Friday.
The 114th-ranked Lorenzi broke Monaco's serve to go up 4-3 in the decisive set and held on to close the match in 2 hours, 34 seconds at the Ibirapuera Arena.
The 32-year-old Italian squandered a match point before losing the second set, but was in control in the third to pick up the win.
Lorenzi, who had 12 aces, made it to the semis for the first time after five quarterfinal losses in his career.
The 43rd-ranked Monaco, a former top 10 in the world, was trying to win his 200th clay-court match.