Los Angeles Dodgers outfielder Matt Kemp said Thursday he expects to be out one month after reinjuring his left hamstring running the bases.
The 27-year-old had just rejoined the Dodgers on Tuesday from the 15-day disabled list when he got hurt again Wednesday night during a 6-3 loss to the Milwaukee Brewers.
Kemp told MLB.com he felt the hamstring "jab" as he approached third base while scoring from first on a first-inning double by Andre Ethier.
"It's hurting pretty good right now," Kemp said. "It feels worse than the first time. I hope the MRI comes back good and we can go from there. This happens in sports. It happens when you're fast."
Kemp originally was hurt May 4 in Chicago while chasing a ball in the outfield.
He was adamant he didn't come back too soon.
"No, we went through all the tests, I sprinted real hard, everything was normal," he said. "It just gave out on me."
A strained left groin has put Colorado Rockies shortstop Troy Tulowitzki on the 15-day disabled list.
Tulowitzki has been dealing with a sore groin since the second of the season but the conditioned worsened Wednesday night.
The 27-year-old has been hot lately, going 10-for-24 to raise his average to .287 with eight homers and 27 RBI.
He said "there have been tweaks here and there" throughout the season "but this is worse."
Marco Scutaro is expected to move over from second base to fill in at shortstop.
CARDS NEED ACES
In April, all the St. Louis Cardinals were pitching in
In May, not so much.
The Cardinals slipped to a 13-16 record during the past month and blew a few games they should have won.
Manager Mike Matheny is satisfied with the club's offence but other elements of the game need work.
"Whether it is the defensive side, whether it is the pitching side, you've just got to be very honest with how we evaluate ourselves and what adjustments need to be made and not accept anything less." Matheny said.
The Cardinals enter a series Friday night against the Mets at New York, having lost five of seven games.
SURGERY FOR MARKAKIS
Nick Markakis has a broken hamate bone in his right wrist that will require surgery Friday, MASNSports.com has reported.
The Baltimore Orioles outfielder will be out three to four weeks.
Markakis has been playing hurt for several weeks but he aggravated the wrist injury while taking a swing Tuesday against the Toronto Blue Jays.
Markakis, 28, is hitting .256 with eight homers and 26 RBI. The Orioles are expected to put him on the disabled list Friday.
ROBERTSON NOT READY
Reliever David Robertson, who has been out since May 11, is expected to miss at least two more weeks because of an injured rib-cage, New York Yankees general manager Brian Cashman told ESPNNewYork.com.
Robertson has yet to throw bullpen sessions or play in rehab games.
"None of that has happened yet," Cashman said. "He didn't think this was a serious issue and then the next thing you know, it turned into a DL and it has turned into something that is longer than 15 days."
The 27-year-old right-hander has a 0-1 record with a 2.51 earned-run average and one save this season.
FRIERI FREEZE OUT
Right-hander Ernesto Frieri has been unhittable for the Los Angeles Angels.
Since being acquired May 3 in a trade with the San Diego Padres, Frieri has struck out 25 batters while allowing no hits or runs during his first 12 innings as an Angel.
According to Elias, Frieri is the first pitcher in major-league history to make 12 consecutive appearances for a new team without allowing a hit.
Cleveland Indians designated hitter Travis Hafner, who turns 35 Monday, had surgery Thursday on his right knee, and is expected to return in four to six weeks. The procedure cleaned up frayed cartilage in Hafner's right meniscus. He's batting .242 with six home runs and 23 RBI this season. The Indians recalled left-handed pitcher Scott Barnes from triple-A Columbus ... The Oakland Athletics have optioned pitcher Tyson Ross to triple-A Sacramento. Ross was 2-6 with a 5.94 ERA over nine starts with Oakland ... The Dodgers have called up prospect Alex Castellanos, who was hitting .379 at triple-A. Castellanos, 25, has shifted to second base after spending time in the outfield ... Pittsburgh Pirates outfielder Nate McLouth has been placed on release waivers.