PEORIA, Ariz. (AP) - Jesus Guzman hit a three-run homer with one out in the bottom of the ninth inning, lifting the San Diego Padres to a 6-4 victory over the Arizona Diamondbacks on Thursday.

The home run, off Arizona reliever Brian Sweeney, was San Diego's first with a runner in scoring position in 14 at_bats.

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``We saved the best for last,' Padres manager Bud Black said.

Justin Upton had two hits, including his first home run of the spring, for the Diamondbacks. His two-run homer off Greg Burke in the top of the fourth inning gave Arizona a 3-2 lead.

San Diego was without bench coach Rick Renteria, who was scheduled to undergo surgery Thursday night to repair a broken palate. Renteria went to the hospital for further evaluation in the morning after he was struck in the face with a line drive during batting practice. The ball ricocheted off a screen designed to protect Renteria and hit him just above the mouth, pushing his front teeth back.

``It hit him square, right above the lip,' Black said.

The 49-year-old Renteria is in his first season as the Padres' bench coach. He was the Padres' first-base coach the previous three seasons and has been a coach within the organization since 2003.

Renteria hit .237 in parts of five seasons with the Pittsburgh Pirates, Seattle Mariners and Florida Marlins. Black said he isn't certain when Renteria will return to the team.

Diamondbacks starter Daniel Hudson allowed just an unearned run in two innings despite allowing four hits and walking two batters.

Hudson, who was 7-1 with a 1.69 ERA in 11 starts for Arizona last season and is expected to be in the starting rotation, said he struggled with fastball command during the 44-pitch outing. One inning, Hudson said he couldn't keep the ball from running over the plate and the next he couldn't keep it from moving too far inside.

``I was getting frustrated,' Hudson said. ``I couldn't really get into a rhythm and find a middle ground between the two.

``But it'll come. It was the second outing in spring training. It'll come.'

Dustin Moseley also gave up an unearned run in two innings for San Diego.