LOS ANGELES — Oregon's bullpen threw nearly a complete game of scoreless relief and Nick Catalano drove in the winning run in the 11th inning Sunday, giving the Ducks a 5-4 win at UCLA and their first Pac-12 road sweep of the season.

The UO baseball team (40-16, 17-10 Pac-12) rallied back from a 4-1 deficit to remain in a third-place tie with Arizona State in the conference. Oregon hosts Oregon State in a nonconference game Tuesday and California for a three-game series at PK Park beginning Thursday, with all four games starting at 7 p.m. PT on Pac-12 Networks.

Catalano's second hit Sunday drove in Mitchell Tolman with the game-winning run, off reigning Pac-12 pitcher of the year David Berg. Tolman reached with his second hit of the game to start the 11th, then was bunted to second by conference home run leader Shaun Chase before coming around to score.

Garrett Cleavinger (3-1) got the final four outs to earn the win, capping a remarkable afternoon by the UO bullpen. After UCLA took a 4-1 lead in the third off UO starter Brando Tessar, Oregon relievers threw 8 2/3 innings of shutout baseball to keep the Ducks' comeback bid alive.

Trent Paddon relieved Tessar, and was followed by Jordan Spencer, Stephen Nogosek and Cleavinger out of the 'pen.

Tyler Baumgartner tied the game 1-1 with an RBI single in the third that scored Desmond Santos. Shortstop Mark Karaviotis drove in a run with a sacrifice fly in the fifth, and later scored Catalano on a groundball out that capped Oregon's two-run seventh inning that tied the game again at 4-4.

The Ducks earned their first sweep of a conference road series since early May 2013, at Washington State. Oregon's last two sweeps of this season, against Arizona at home and at UCLA, are over the last two College World Series champions.