MLB notes: Padres' Maybin suspended 25 games

San Diego Padres center fielder Cameron Maybin (24) scores on a ground out by right fielder Will...

San Diego Padres center fielder Cameron Maybin (24) scores on a ground out by right fielder Will Venable (25, not pictured) against the San Francisco Giants during the fifth inning at AT&T Park on June 24, 2014 in San Francisco, CA, USA (Kyle Terada/USA TODAY Sports)

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, Last Updated: 10:06 PM ET

San Diego Padres outfielder Cameron Maybin has been suspended for 25 games Wednesday for violating Major League Baseball's joint drug prevention and treatment program.

Maybin, whose suspension is effective immediately, tested positive for an amphetamine, the commissioner of baseball's office said in a statement.

The 27-year-old, who is the first player in the majors to be suspended this season for violating the drug program, said that his positive test came from a change in medication he had used to treat attention deficit disorder.

"Unfortunately, in my attempts to switch back to a medicine that had been previously OK'd, I neglected to follow all the rules and as a result I tested positive," Maybin said in a statement released by the MLB Players Association.

"I want to assure everyone that this was a genuine effort to treat my condition and I was not trying in any way to gain an advantage in my baseball career.

"I understand that I must accept responsibility for this mistake and I will take my punishment and will not challenge my suspension. I apologize to my family, friends, fans, teammates, and the entire Padres organization."

Maybin is batting .247 for the Padres this season with one homer and nine RBIs in 62 games.

MILONE WANTS OUT

Left-hander Tommy Milone had won a career-high six straight decisions when the A's optioned him to Triple-A Sacramento on July 5 after acquiring right-handers Jeff Samardzija and Jason Hammel from the Chicago Cubs.

The demotion, apparently, did not sit well with Milone. According to multiple reports, Milone has asked to be traded.

Manager Bob Melvin said Milone called him Monday after news broke of his request.

"I'm pretty sure he didn't expect it to get the play that it has," Melvin said. "To an extent, he's looking out for his big league career. He's pitched really well for us. I don't blame him for wanting to pitch in the big leagues.

"It doesn't mean he doesn't want to be here, and he does want to be here. He's well thought of by his teammates, well respected by his teammates. And he respects the situation going on here, but he wants to be in the big leagues, and I don't blame him for that."

On the season, Milone is 6-3 with a 3.55 earned-run average and 61 strikeouts over 96 1/3 innings.

SPRINGER SIDELINED

The Houston Astros placed rookie sensation George Springer on the 15-day disabled list due to a left quad strain.

Marc Krauss has been recalled from Triple-A Oklahoma City to take the injured outfielder's spot on the roster.

"Still a little sore," Astros manager Bo Porter said Tuesday. "There's still some discomfort. The training staff, they brought him out, went through some drills, went through some running and just do not feel like he's able to go full speed without having discomfort. And we don't want to take any chances of it getting worse or him ending up blowing his quad or something where we're dealing with an injury that would take much longer to heal than where we're at right now."

Springer, the No. 11 overall draft pick in 2011, leads the Astros in home runs (20) and RBIs (51) in just 78 games.

ZIMMERMAN OUT AGAIN

The Washington Nationals placed infielder/outfielder Ryan Zimmerman on the 15-day disabled list with a right hamstring strain.

Zimmerman, 29, goes on the DL for the second time this season after missing 44 games with a right thumb fracture earlier in the year. He is hitting .282 with five home runs, 19 doubles and 36 RBIs.

In the month of July, Zimmerman collected 21 hits in 58 at-bats (.362), posted a .418 on-base percentage and a .569 slugging percentage with eight extra-base hits (six doubles, two home runs).

The Nationals also recalled infielder Zach Walters from Triple-A Syracuse.

YANKS' JOHNSON TO DL

The New York Yankees placed infielder Kelly Johnson on the 15-day disabled list with a strained left groin.

Johnson was removed from Tuesday night's game against the Texas Rangers after suffering the injury.

Johnson is hitting .219 with six home runs and 22 RBIs in 201 at-bats this season.

The Yankees also called up right-hander Chris Leroux from Triple-A Scranton/Wilkes-Barre and designated right-hander Bruce Billings for assignment.

BRIEFLY

The Cleveland Indians recalled infielder Jose Ramirez and optioned left-hander T.J. House to Triple-A Columbus ... The Minnesota Twins have designated relief pitcher Matt Guerrier for assignment ... The Philadelphia Phillies designated right-hander Jeff Manship for assignment to make room for Carlos Ruiz, who is coming off the disabled list. The Phillies also recalled Phillippe Aumont from Triple-A Lehigh Valley and catcher Cameron Rupp was optioned to Triple-A ...


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