PEORIA, Ariz. -- Erik Bedard continued his comeback from shoulder problems with another strong start, as the Mariners' left-hander gave up just his second run of the spring in a 4-1 victory over the Padres on Sunday.

Bedard, who hasn't pitched in a regular-season game in 18 months, held San Diego to five hits and one run in five innings of work to put his Cactus League ERA at 1.69. The 31-year-old has surrendered just eight hits and two runs in 10 2/3 innings, with three walks and 10 strikeouts.

Padres starter Wade LeBlanc matched Bedard for four innings before Milton Bradley bounced a bases-loaded single just over third baseman Jorge Cantu to drive in a pair of runs in the bottom of the fifth to break a 1-1 tie.

LeBlanc, battling for the fifth spot in the Padres' rotation, put forth his best effort of the spring with a six-inning stint in which he gave up five hits and three runs. The 26-year-old lefty came in with an 0-2 record and 9.22 ERA in his first four Cactus League outings.

LeBlanc gave up three home runs in his last start, a five-inning effort against the Angels at Peoria Stadium, but kept the Mariners largely in check until a hit batter, single and walk in the fifth set up Bradley's go-ahead base hit.

Brad Hawpe hit a solo home run in the second for the Padres, his second of spring, on a 3-2 fastball from Bedard. Otherwise, the Mariners' veteran left-hander sailed through five innings on just 62 pitches, helped by double-play grounders in the first and fourth.

The Mariners also threw out Chris Denorfia -- trying to stretch a leadoff double into a triple -- in the fifth inning on a nice relay from Bradley to shortstop Jack Wilson on a ball into the left-center-field gap.

Bedard said he's throwing without pain for the first time in three years.

"I'm happy," Bedard said. "The main thing is, I'm healthy. I go out there and throw, and it doesn't hurt. That's all I'm looking for."

Mariners designated hitter Jack Cust drove in his team-leading ninth RBI with a first-inning single to the opposite field, after Chone Figgins had singled and stole second against LeBlanc. The Mariners also got a run in the seventh on a triple by Brendan Ryan, who scored on a base hit by Josh Bard.

Up next for the Padres: Mat Latos, a 14-game winner a year ago who is expected to be the Padres' Opening Day starter, gets the start on Monday against the White Sox at the Peoria Sports Complex. First pitch is 7:05 p.m. PT, and the game will be televised in San Diego by Channel 4. Latos has a 10.50 ERA over three official Cactus League outings this spring. On Wednesday, Latos allowed five runs on six hits with six strikeouts in 3 2/3 innings against Minor League hitters. Pitching coach Darren Balsley said Latos showed better command on his fastball and curveball in that outing.

Up next for the Mariners: Top rookie pitching prospect Michael Pineda makes his fifth appearance of the spring, as the Mariners travel to Goodyear to face the Reds at 1:05 p.m. PT. Pineda, looking to nail down a spot in the rotation, will be followed by David Pauley, as the club will give a long look to both right-handers. Justin Miller could also get an inning in relief, but both Pineda and Pauley are expected to go about four innings. Right-hander Bronson Arroyo starts for Cincinnati.