ST. PETERSBURG, Russia (AP) Fifth-seeded Tommy Robredo beat Russia's Mikhail Youzhny 6-4, 3-6, 6-3 to reach the second round of the St. Petersburg Open on Tuesday.

Youzhny won more points than his Spanish opponent overall, but lacked consistency on the key points in a match between two 33-year-old veterans.

Robredo next plays Marcos Baghdatis of Cyprus. He won 6-4, 4-6, 6-3 against Latvia's Ernests Gulbis, winner of the last edition of the tournament in 2013.

Benoit Paire became the first seeded player to fall, with the sixth-seeded Frenchman retiring hurt from his first-round encounter with Poland's Jerzy Janowicz. Paire was moving slowly when he quit, with Janowicz cruising at 6-4, 3-0.

In the second round, Janowicz faces either Lithuania's Ricardas Berankis or France's Lucas Pouille.

Second-seeded Milos Raonic of Canada will meet Evgeny Donskoy in the second round after the Russian wildcard saw off St. Petersburg-born French qualifier Alexandre Sidorenko 6-2, 6-4.