RIO DE JANEIRO (AP) — Teenage tennis sensation João Fonseca frustrated his home fans at the Rio Open in a first-round loss Tuesday, two days after winning his first ATP title.Fonseca lost 6-1, 7-6 (4) to No. 60-ranked Alexandre Muller of France, making 34 unforced errors and appearing to be exhausted during the match.
The 18-year-old Brazilian won his career first title at the elite level with victory in the Argentina Open final on Sunday.
Muller will meet Argentina’s Tomás Martin Etcheverry in th enext round.
“It was tough to play against such a great player and perhaps 5,000 (fans), but I’m very happy to get the victory today,” Muller said. “I was feeling calm in half of the match. I didn’t take my chances to take the break in the second set and then he was playing better and better. I played a great tiebreak to finish.”