DENVER -- Rockies manager Jim Tracy said first baseman Jason Giambi strained his left biceps during a ninth-inning at-bat on Sunday against the Giants and will likely be shut down for the rest of the season.

"I don't like his chances of seeing any more action during the course of the 2010 season," Tracy said. "It's definitely strained. ... He's sore today."

Tracy said Giambi will have an MRI exam to further evaluate the damage.

Giambi, who was 0-for-4 in Sunday's series finale against the Giants, struck out to end the game against San Francisco starter Matt Cain.

"He felt it," Tracy said. "I leaned over to my bench coach and said, 'He hurt himself.' You know how you could tell? Have you ever seen him take a swing and see the bat come completely loose out of his hands? He tweaked something there."

The 38-year-old veteran has been a key backup and clubhouse leader for the Rockies since he was acquired in August 2009. He's tied for the team lead with two walk-off homers (June 23 vs. the Red Sox and Sept. 12 vs. the D-backs), both in pinch-hit situations.

Giambi has started 35 games at first base and eight as a designated hitter, also earning a .393 on-base percentage as a pinch-hitter.

Rockies memorializing McGregor

DENVER -- The Rockies announced Monday that the club will unveil a permanent outfield memorial to honor former team president Keli McGregor on Tuesday.

McGregor, who died of a rare virus in April at the age of 47, was president of the club from 2001 until the time of his death.

The ceremony, which will take place before the Rockies-Dodgers game at 6:40 p.m. MST, will display a permanent "KSM" memorial on the outfield wall.

His wife, Lori, three daughters, Jordan, Taylor and Landri, and son, Logan, will be in attendance.

"It was brought to my attention this past weekend," Rockies manager Jim Tracy said. "Obviously, we're going to revisit something that was really, really tough much earlier in the season. It will have its moments, not maybe quite as strong as went through early in the season, but there will be those moments."

McGregor was a multi-sport athlete at nearby Lakewood High School before he went on to become a two-time All-American tight end at Colorado State. He was drafted by the Denver Broncos, and eventually played for two other NFL clubs. He was voted the Colorado State All-Century Team in 1992 and was elected to the CSU Hall of Fame in 1996.

Olivo out following blow to head

DENVER -- Miguel Olivo did not start Monday's series opener against the Dodgers at Coors Field as a precaution after Olivo was struck in the head on Sunday.

As Olivo, along with much of the Rockies infield, left his post to field a ninth-inning fly ball off the bat of Giants starter Matt Cain, he and shortstop Troy Tulowitzki converged on the popup. Tulowitzki ended up catching the ball, but Olivo was apparently struck by one of Tulowitzki's cleats in the process.

"It's a little tight, a little bit of a headache," Olivo said. "But I feel fine."

Though Ubaldo Jimenez, whom Olivo has caught for the majority of the ace's starts, was on the hill for Monday's contest, catcher Chris Iannetta started behind the plate.

"That position is dangerous enough in itself and when you've got a knot on your head, you're taking your chances to see how many foul tips a guy can take off his mask," Rockies manager Jim Tracy said.

Tracy said Olivo, who is hitting .357 against Dodgers starter Ted Lilly in 14 career at-bats, will be available if needed. Iannetta is hitting .375 with a homer and three RBIs against the southpaw.

Worth noting

Rockies manager Jim Tracy said outfielder Seth Smith, who received an IV this weekend when he was suffering from flu-like symptoms, was feeling better on Monday. Third baseman Ian Stewart, who has been suffering the same symptoms and has not started a game since Aug. 25, was not at the ballpark. "Smith will be here. Smith is weak. ... Stewart will not be here," Tracy said. ... Starting pitcher Jason Hammel and third baseman Melvin Mora have exhibited similar symptoms in the last week.