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St. Louis Cardinals: Scott Rolen, rehabbing after undergoing shoulder surgery on May 13, participated in his second day of tossed batting practice, joining his teammates in the cages on Monday, Cardinals trainer Barry Weinberg said.

Rolen also fielded ground balls and is to continue with baseball drills as much as his shoulder allows, the St. Louis Post-Dispatch reported Tuesday.

"I'm kind of under orders to stay up the middle and hit some line drives, because getting all the way through a ball might be a little more of a test than I need to make today," Rolen told the paper. "I tried to stay a little shorter [with the swing] ... I get one swing there and it's uncomfortable when I take a bad swing. I'm going to have to swing the bat a little bit. I'm going to have to get in the cage and strengthen it that way."

Weinberg told the paper Rolen is still seven to 10 days from being healthy enough to be a "baseball decision" for a lineup return and the third baseman could be sent on a rehab assignment before rejoing the Cardinals.

"We'll keep an open mind and see how he feels," manager Tony La Russa told the paper. "He'll work out some more and let it go from there."

Cincinnati Reds: The team activated outfielder Wily Mo Pena from the 15-day disabled list and he was in the lineup for Tuesday night's game against Tampa Bay.

Pena has been sidelined by a strained left thigh since May 9. He was one of the Reds' top hitters when he pulled the muscle on April 23. He was on the bench for 12 of the next 13 games and then went on the disabled list. He's hitting .313 with six homers.

The Reds designated outfielder Jason Romano for assignment. Romano hit .308 in eight games with the Reds.

Right-hander Josh Hancock was sent to Triple-A Louisville on a rehabilitation assignment. Hancock opened the season on the disabled list with a strained groin.

Boston Red Sox: Johnny Damon was out of the starting lineup for the second straight game with a strained rotator cuff on Monday, but the Red Sox center fielder expects to return Tuesday night against the Cardinals.

"I'm sore, but I'm much better," Damon told the Boston Herald. "They think I should rest one more day, so I'm 100 percent instead of going backwards. I can move my arm much better than [Sunday], so I should be back in there [Tuesday]."

Damon underwent an MRI on the shoulder Sunday and the results showed no major damage.

Baltimore Orioles: Second baseman Brian Roberts, out of the lineup since June 1, is recovering from his strained rotator cuff, but manager Lee Mazzilli is not rushing to put him back in the lineup, the Washington Post reported.

Mazzilli opted not to put Roberts back in the lineup Monday, even though Roberts threw on the field without reporting any pain before the game. But Mazzilli said Roberts will likely return Tuesday or Wednesday.

"He convinced me that he's healthy and getting better," Mazzilli told the paper. "I think right now he's going to have to be the judge whether it's Tuesday or Wednesday."

The team optioned right-hander Nate Bump to Triple-A Albuquerque and designated left-hander Matt Perisho for assignment.

Los Angeles Dodgers: The team placed outfielder Ricky Ledee on the 15-day disabled list with a strained left hamstring. The move was retroactive to June 5.

In another move, the Dodgers activated outfielder Jason Grabowski, who had been sidelined by a sore right shoulder since May 17.

Ledee has hit .279 in 48 games, with two homers and 16 RBI.

Grabowski has appeared in 28 games, batting .152 with one homer and three RBI.

Florida Marlins: The Marlins also called up two left-handers, Valerio De Los Santos from Class-A Jupiter and Chad Bentz from Albuquerque.

Bentz was born with a deformed right hand. Much like former major-league pitcher Jim Abbott, he holds his glove to his body as he winds up and then slips it onto his left hand after releasing each pitch.

Bentz was 0-3 with a 5.86 ERA with Montreal last season. This year, he had a 0.82 ERA in 11 games at Albuquerque.

Bump went 0-3 with a 3.51 ERA in 21 games. He was the losing pitcher twice on the team's recent 1-6 road trip.

Perisho, who had been used primarily as a left-handed specialist, was 2-0 with a 1.93 ERA in 24 games. But he allowed a three-run homer to lefty-hitting Ryan Church in a 6-3 loss at Washington on Sunday.

De Los Santos, who has pitched for Milwaukee, Philadelphia and Toronto, did not give up an earned run in three games with Jupiter. He was signed to a minor-league contract on May 13

Texas Rangers: The team designated outfielder Chad Allen for assignment.

The Rangers have 10 days either to release or to trade Allen if he does not accept a minor-league assignment.

Allen, 30, was hitting .283 with five RBI in 21 games this season. He is a career .269 hitter with 14 homers and 84 RBI in 267 career games with Minnesota, Cleveland, Florida and Texas.

Also on Tuesday, the Rangers purchased the contract of infielder Marshall McDougall from Triple-A Oklahoma of the Pacific Coast League. McDougall, who once hit six home runs in a game while playing for Florida State in 1999, was batting .320 with seven homers and 39 RBI this season with the RedHawks.

Tampa Bay Devil Rays: The team called up outfielder Reggie Taylor from Triple-A Memphis for the start of an interleague series against the Reds, one of his former teams.

The D-Rays designated Josh Phelps for assignment. They have 10 days to trade, release or ask waivers on the designated hitter, who was batting .266 with five homers.

"The only reason for this move, period, was versatility," manager Lou Piniella said. "Nothing more, nothing less. We've struggled with our outfield defense. It's just versatility."

Tampa Bay got Taylor, 28, from Colorado for left-hander Bobby Seay on April 8. Taylor hit .284 with seven homers for Durham, playing all three outfield positions.

Taylor played for the Reds from 2002-03, his last appearances in the majors.

Information from The Associated Press and SportsTicker was used in this report.