Josh Reddick, of, Red Sox: Reddick hit his sixth home run of the season on Thursday, but he also strained his oblique muscle on that same swing and went on the seven-day disablied list, according to BA correspondent Alex Speier, who expects Reddick to miss more than just seven days.

“Those things are obviously tricky. We’re going to be extremely cautious here because we don’t want any reaggravation of the injury,” said farm director Mike Hazen. “Being that he’s an aggressive swinger, you somewhat have to be mindful of that. He’s doing better in the first couple of days, which is good. We’ll see how it goes from here.”

Reddick, 22, was off to a promising start for Double-A Portland, hitting .288/.358/.644 in 17 games with eight walks and 18 strikeouts.

Jose Tabata, of, Pirates: Tabata will be out for four to six weeks with a strained right hamstring. Tabata, who ranked as Pittsburgh’s No. 3 prospect entering the season, was batting .250/.324/.297 for Double-A Altoona with six walks and just four strikeouts in 17 games. Despite being only 20 years old, Tabata has proven to be somewhat injury prone since signing out of Venezuela in 2005. He also missed time last year with a strained hamstring following the midseason trade from the Yankees, and he had hand surgery in August 2007 to remove the hamate bone in his right wrist.

Jeremy Hellickson, rhp, Rays: Hellickson left last night’s game after pitching only two innings for Double-A Montgomery. The injury is being called a supraspinatus sprain in his right shoulder by the Montgomery Advertiser, which means Hellickson will miss at least his next start:

"I told them it didn’t feel right on the pickoff," Hellickson said. "They made the decision to take me out. I didn’t know what it was, but there was a little discomfort in there."

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"He felt something funny, something he hasn’t felt before," (manager Billy) Gardner said. "Right when he said he felt something, we got the bullpen going."

Hellickson, 22, has a 2.10 ERA with eight walks and 36 strikeouts in 30 innings. One scout who saw Hellickson said he was one of the best pitchers he’s seen this year, with three solid- to above-average pitches in his repertoire and advanced control.

Jason Heyward, rf, Braves: Heyward hasn’t officially been on the DL, but he has missed several games and been kept from playing in the field with a hip flexor injury, according to the The (Myrtle Beach) Sun News. Heyward, 19, has played in only five of high Class A Myrtle Beach’s 12 games since April 22—he missed a stretch of five straight games from April 27 to May 2—and has served as the Pelicans’ DH in all but one game of that 12-game stretch.

Yamaico Navarro, ss/2b, Red Sox: Navarro played in just one game for high Class A Salem before hitting the DL with a left wrist injury. Now it looks like Opening Day might be the only game Navarro will play until mid-June, at best, after having surgery to repair a broken hamate bone. According to Speier, the Red Sox tried to have Navarro rehab the injury, but he re-fractured the bone in the process, prompting the surgery for the 21-year-old from the Dominican Republic.

Brandon Erbe, rhp, Orioles: Erbe landed on the seven-day DL with shoulder fatigue, according to MASN Sports. Erbe, 21, has an ERA of 0.90 in 20 innings for Double-A Bowie with eight walks and 19 strikeouts. He has removed some of the violence from his delivery since signing as a third-round pick in 2005, but there is still some effort involved, so his return is worth monitoring.

Gaby Sanchez, 1b, Marlins: Sanchez, 25, sprained his right knee yesterday and had to leave the game for Triple-A New Orleans. Sanchez was covering home plate after an errant throw from center field when Round Rock’s Yordany Ramirez collided with him at home. Sanchez applied the tag to record the out, but was knocked down and left the game. The Double-A Southern League MVP in 2008, Sanchez is hitting .345/.414/.517 in 23 games with 11 walks and 14 strikeouts. No word yet on how much time the Marlins expect Sanchez to miss.

Jeff Marquez, rhp, White Sox: The White Sox placed Marquez on the DL with a right elbow injury, a White Sox team official told the Chicago Tribune. Marquez had about as awful of a start as you can imagine. In four starts with Triple-A Charlotte, Marquez piled up a 14.18 ERA in 13 1/3 innings, allowed 26 hits and four home runs with 10 walks and seven strikeouts.

Dallas Buck, rhp, Reds: Buck’s career has been riddled with injuries since he helped lead Oregon State to the 2006 College World Series title as a junior while pitching through a sore arm that turned out to be a partial ligament tear in his elbow. The injury dropped Buck from a possible first-round pick to the third round, and he’s yet to throw more than 100 innings in a pro season. He had Tommy John surgery midway through the 2007 season that also cost him the first half of 2008, and now Buck finds himself back on the DL with right shoulder inflammation. The latest setback was noticeably frustrating for Buck, who hurled his glove into the dugout after being pulled from a 1-1 game in the fourth inning on Thursday with the injury. Buck’s fastball sat at 87-90 mph and touched 91 with good tailing life on Thursday, though he struggled to throw strikes and miss bats.

Michael Pineda, rhp, Mariners: BA correspondent John Hickey checks in with news that Pineda should return to action with high Class A High Desert in around 10 days after feeling some tighness near his right elbow while doing some work in the bullpen. Pineda, 20, has a 3.51 ERA through his first four starts, with four walks and 24 strikeouts in 25 2/3 innings. His last start was on April 24.

Ian Desmond, ss, Nationals: Desmond is expected to miss the next four to six weeks after having surgery to remove the hamate bone in his left hand on April 23. Desmond, 23, played in only seven games for Double-A Harrisburg and batted .346/.433/.538, one year removed from hitting .251/.318/.406 in 93 games at the same level. By the time Desmond gets healthy, he could have some competition for the Double-A shortstop job if Danny Espinosa keeps up his quick start. A third-round pick from Long Beach State a year ago, the 22-year-old Espinosa is batting .299/.438/.519 with 17 walks and 19 strikeouts in 23 games with high Class A Potomac.

Quick Hits: The Sun News also reports that Braves first baseman Freddie Freeman, off to a .229/.316/.434 start in 23 high Class A games, has been experiencing "side pain" . . . High Class A Tampa Yankees catcher Jesus Montero left Monday’s game in the eighth inning with a leg injury, but returned to the lineup yesterday at DH and went 1-for-3 with a double and a walk . . . Padres shortstop/second baseman Cole Figueroa, a sixth-round pick last year, injured the meniscus in his right knee in a collision at second base. That’s the same knee Figueroa had surgery on in the fall and gave him problems while at Florida last year.