Padres pitcher Cory Luebke, who has been recovering from Tommy John surgery since last May, had his throwing program stopped for a second time this month Saturday. Lubeke had progressed to playing catch off a mound.

Luebke was shut down earlier in May after feeling pain in his throwing elbow, though that was not considered a serious issue. 

Rays catcher Jose Molina left Saturday's game with hamstring tightness, the Tampa Bay Times reports. He was 2 for 2 with two doubles before exiting.

Molina is considered day to day.

Nationals outfielder Bryce Harper was held out of Saturday's lineup against the Padres due to a bruised left knee, according to The Washington Times.

Harper told reporters he is still sore from his recent outfield wall collision. MRI results on his abdomen came back clean. Harper could still be held out as a precaution Sunday in order to return in full strength Monday at San Francisco. He is hitting .171 with two home runs and four RBI in 12 May games.

The Washington Post reports Saturday that Nationals outfielder Jayson Werth will not be able to return until Friday at the earliest, due to a setback in his hamstring while rehabbing in the minor leagues.

Werth is seeing a specialist in Chicago to determine what is wrong with the hamstring. He has been out since May 2 due to the injury, and this is the second specialist he is seeing this weekend since suffering the setback. 

Rangers starting pitcher Alexi Ogando revealed to manager Ron Washington that his arm had been bothering him before his last start, after which he was placed on the disabled list, the Dallas Morning News reports.

"He finally told me that when we were talking, and I said, ‘You can’t do that’," Washington said. "He’s got a different workload this year. When you are a reliever and you only have to pitch an inning or so, you can pitch through some soreness, but when you are a starter, it’s a different situation. You can make it worse. It’s something that comes with experience. Now that he has the experience of going through this and knowing the situation, hopefully it won’t happen again. Thank God it wasn’t more serious."

Ogando is on the 15-day disabled list with biceps tendinitis.

White Sox first baseman Adam Dunn left Satuday's game against the Angels with back spasms. He was 1 for 3 with two RBI and two strikeouts before being replaced by Jeff Keppinger.

The Padres have officially reinstated outfielder Carlos Quentin from the paternity list before Saturday's game against the Nationals. But Quentin was not in the starting lineup.

Quentin has missed the last three games to attend the birth of his child. He has reached base in each of his past five games, hitting .211 with four walks, two home runs and four RBI during that stretch.

Despite batting .357 with a .438 on-base percentage in his last 13 games, Phillies outfielder Ben Revere was out of the starting lineup for a season-high fourth game in a row Saturday against the Reds. John Mayberry got the start in Revere's place. 

Revere has been limited to six starts against left-handed pitchers this season, but only two of the four games he has sat out have been against lefties. 

Revere told the Philadelphia Inquirer Saturday that he has been getting time off to work on his swing. Revere, who has just two extra-base hits in 118 at-bats, said he is trying to work on driving the ball.

"We've kind of been talking and going back to my old films from the minor leagues with the Twins and trying to find that power stroke," Revere said. "I know back then I was a 10-triple guy, it was gap-to-gap with everything, and they want me to get back to that and I do too. That’s the stuff I’m working on."

Nationals outfielder Bryce Harper was not in the starting lineup Saturday against the Padres.

He was given the day off against left-hander Eric Stults. He is a career .226 hitter with seven homers and 26 RBI against lefties. He is hitting .171 with two home runs and four RBI in 12 May games.

The Braves announced Saturday that reliever Eric O'Flaherty has been diagnosed with a torn ulnar collateral ligament in his throwing elbow, after receiving the results of an MRI exam.

O'Flaherty was placed on the 15-day disabled list earlier in the day, and he is expected to visit Dr. James Andrews in the next few days.

Andrews is famous for performing Tommy John surgery on torn UCLs, though the team has not confirmed that the procedure will be necessary for O'Flaherty.