TAMPA, Fla. -- Chris Dickerson was on his way to a banner debut in a Yankees uniform, but the outfielder may have been too eager to make a good impression.

Dickerson pulled up with what the team is describing as cramping and spasms in his left hamstring while running the bases on Saturday following his third hit in three at-bats.

The 28-year-old was acquired from the Brewers on Friday for right-hander Sergio Mitre, and he drew the start against the Pirates, playing left field. He will be re-evaluated on Sunday.

"We think it's cramps, but obviously we're not going to know until [Sunday]," Yankees manager Joe Girardi said. "He was actually cramping up this morning a little bit and did not inform anyone."

Dickerson was obtained in part to be an insurance policy for the Yankees, who are not sure if center fielder Curtis Granderson will be healed from a strained right oblique in time for Opening Day.

He doubled in his first at-bat against Pittsburgh's Kevin Correia, then added a pair of singles, driving in a run.

Earlier, Dickerson said he did not know how much of a chance he'd have of going north with the team. He was originally drafted by the Yankees in 2000, but elected to attend the University of Nevada-Reno instead.

"I was drafted out of high school by the Yankees, and to be in this position now is really special," Dickerson said.

Granderson says he's '50-50' for Opening Day

TAMPA, Fla. -- Yankees outfielder Curtis Granderson believes he has a "50-50" chance of being on the field for Opening Day.

Mending a strained right oblique, Granderson resumed swinging a bat and running the bases on Saturday while also throwing, saying he continues to feel some tightness but only minor discomfort.

"I'm 50-50 right now," Granderson said. "The way everything felt today was a good sign, another step forward. Hopefully everything continues the same way."

Granderson said that he believes he may be able to get in a Grapefruit League game on Monday against the Rays at George M. Steinbrenner Field.

The center fielder suffered the injury on Tuesday while taking batting practice in Sarasota, Fla., at the spring home of the Orioles. Yankees general manager Brian Cashman indicated that the team may wait until next Wednesday's workout day at Yankee Stadium to decide if Granderson should be placed retroactively on the disabled list.

That would permit him to be activated for the April 6 game against the Twins in New York.

"That would be their call," Granderson said. "I feel like everything is fine in terms of avoiding the DL."

Yankees could be without Feliciano early on

TAMPA, Fla. -- Yankees left-hander Pedro Feliciano could start the season on the disabled list with lingering discomfort near his pitching shoulder.

Manager Joe Girardi said on Saturday that Feliciano, 34, continues to be bothered by the soreness that has kept him out of Grapefruit League play since March 7.

Feliciano will play catch on flat ground on Sunday after being prescribed additional rest and treatment following a live batting practice session this week.

Girardi said that the Yankees should know by Tuesday if Feliciano -- who led the Majors in relief outings in each of the last three seasons -- will be ready to begin the year.

"It's a concern," Girardi said. "You want him Opening Day."

Of potential candidates to replace Feliciano on the Opening Day roster, Girardi mentioned Luis Ayala and Romulo Sanchez, while also acknowledging that Mark Prior could be considered. Of that group, only Sanchez is on New York's 40-man roster.

"We know the guys that are here in camp," Girardi said. "We have guys that are not here now that have pitched. We don't want to get too far ahead of ourselves."

Bombers bits

Yankees general manager Brian Cashman said that the team must decide to place infielder Eric Chavez on the roster by Monday, though it seems to be a formality at this point. "I think that it looks good, but you never know until it happens," Chavez said. ... Russell Martin reported some stiffness in his left hamstring and will not catch again until Monday. ... Setup man Rafael Soriano proclaimed himself ready for the regular season, saying he will not pitch again this spring. Soriano had a 3.38 ERA in six games, spanning 5 1/3 innings. He walked none and struck out six, allowing six hits. ... CC Sabathia threw three scoreless innings in a Minor League game at the Yankees' Himes Avenue complex on Saturday, allowing five hits with no walks and a strikeout (37 pitches, 24 strikes).