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4/16/2014 8:37 P.M. ET

Headley sits with mild biceps strain

SAN DIEGO -- Third baseman Chase Headley was out of the Padres' lineup Wednesday with what manager Bud Black termed a mild right biceps strain.

Headley, who is hitting .160 through 50 at-bats this season, suffered the strain hitting in the batting cage before Tuesday's game against the Rockies.

"It bothered him as the day went on and bothered him after the game and then again this morning," Black said. "Hopefully he responds well to treatment and gets back out there."

Alexi Amarista made the start at third base against the Rockies on Wednesday night.

When Headley returns to the lineup, Black is hoping to see more production. The same could be said for Headley.

"There's no doubt he's got to start getting his good at-bats," Black said.

Durability has been one of Headley's biggest strengths during his time in San Diego. He has played in 141 or more games in four of the past five seasons.

"It's something I try to take pride in. I have been fortunate to avoid the big injury, but I would also like to think the way I take care of my body and prepare in the offseason and how I maintain my body in-season has something to do with that as well," Headley said at the end of Spring Training.

"There's something to be said for the guys who run out there when they don't feel 100 percent and still give everything they have."

Alonso fields grounders at third base just in case

SAN DIEGO -- With Chase Headley nursing a mild strain of his right biceps, and with the Padres short on options at third base, first baseman Yonder Alonso crossed the diamond during batting practice prior to the game Wednesday against the Rockies.

Alonso took ground balls three hours before the game under the watchful eye of manager Bud Black and others.

Consider it insurance in case the team gets in a bind and needs someone to man the hot corner in a pinch.

"We've got a third baseman who is day to day with a biceps strain, and if something happens tonight, we might need someone to go over there," Black said. "[Alonso] has got good hands and a good arm. We're going to look at it a little."

Alonso has appeared in two games at third base during his Major League career -- with the Reds in 2011 and once with the Padres last season.

Alonso isn't a complete stranger to the position. He played it a lot as a youth and moved over to first base at the University of Miami because Ryan Braun played third base.

Everth back after night off to rest sore knee

SAN DIEGO -- The Padres got a scare late Monday when shortstop Everth Cabrera tweaked his right knee in a victory over the Rockies.

Cabrera was a late scratch Tuesday with soreness in the knee, which even he said scared him a little bit.

But Cabrera, who has been the team's most productive offensive player, was back in the lineup for the third meeting of a four-game series against the Rockies.

"It was good to get his name in the lineup again," said Padres manager Bud Black.

Cabrera suffered the injury when he made a spectacular catch of a Carlos Gonzalez line drive Monday, though it wasn't on the catch. It was when Cabrera quickly scrambled to his feet and planted for a throw to first base as he attempted to double up the baserunner, Charlie Blackmon.

"We said it was day to day, and we felt as though he's good enough to go," Black said. "It's still a little sore but he's playable."

Alexi Amarista got the start at shortstop in Cabrera's absence Tuesday.

Going into Wednesday's game, Cabrera leads the team in hits (18), doubles (six), runs (seven) and batting average (.340).

Worth noting

• Outfielder Carlos Quentin, on the disabled list with a bone bruise in his left knee, was out on the field for batting practice again Wednesday. Quentin hit with the early group, played long toss in the outfield during batting practice and "moved around" as manager Bud Black said.

"He's getting close to more baseball activity on the field," Black said.

When asked if Quentin might be ready for a Minor League injury rehab stint by the weekend, Black said that wouldn't be likely.

Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.