ST. LOUIS — Cardinals RHP Chris Carpenter's rehab was put on hold after he injured his lower back in a bullpen session.
GM John Mozeliak said Thursday that any contribution this season from Carpenter, sidelined since February with nerve issues on the right side of his body, would be a bonus. But he said the prognosis has improved over the last few days.
"We don't think it's as serious as we first thought," Mozeliak said. "It's slowing things down. Hopefully we can continue to work at it."
Before spring training, Carpenter, 38, and the team believed the injury might be career-ending. The 2005 NL Cy Young winner had been steadily progressing before the back tightened after he finished throwing Sunday.
Mozeliak anticipated the team would have a better handle on the situation after other doctors in St. Louis weighed in.
Rangers rotation: Top prospect LHP Martin Perez is coming back to the majors to pitch Saturday against the Cardinals and ace Yu Darvish will get an extra day of rest, going Tuesday against the Yankees.
Phillies not dumping: GM Ruben Amaro Jr. said despite continued speculation that LHP Cliff Lee and reliever Jonathan Papelbon will be available before next month's nonwaiver trade deadline, that is not the case. "Absolutely not, because these are guys I'd be better off having on my club than not," Amaro said. "Who am I going to replace these guys with to win a championship?"
Astros: RF Trevor Crowe injured his right shoulder crashing into the wall attempting to catch a homer and left the game against the Brewers. He was listed as day to day.
Red Sox: RHP Clay Buchholz (strained neck) threw a bit, so the team hopes the unbeaten starter will come off the DL and pitch next week, as early as Tuesday.
White Sox: RHP Jesse Crain set the franchise record with his 28th straight scoreless appearance, passing J.J. Putz's mark from 2010. Crain has allowed two runs all season.
Manny seeks work: Former major-league OF Manny Ramirez, 41, ended his contract in a Taiwanese league one week before it was set to expire and denied having an offer to play in Japan or the United States, though he is looking for a team. "I love this game too much to give it up when I can still play," Ramirez told espndeportes.com. He hit .352 with eight homers and 43 RBIs in 49 games in Taiwan.