Tampa Bay Rays left-hander David Price was placed on the 15-day disabled list with a left triceps injury. It's the first stint on the disabled list in Price's career.
Left-hander Alex Torres was recalled from Triple-A to fill Price's roster spot. Torres, 25, was 2-2 with a 2.39 ERA, 49 strikeouts, 14 walks and a .190 opponents' batting average in seven starts this season and is a veteran of eight minor-league seasons.
Price, the reigning American League Cy Young Award winner, exited his Wednesday night start against the Boston Red Sox due to discomfort in his left triceps.
Price has allowed seven or more hits six times in his first nine starts this year.
---Philadelphia Phillies starting pitcher Roy Halladay had surgery Wednesday on his right shoulder in Los Angeles, the team said in a statement Thursday.
Halladay, 36, underwent an arthroscopic procedure during which his shoulder was evaluated and worked on. Team physician Michael Ciccotti said Halladay "underwent debridement of his labrum and rotator cuff as well as removal of an inflamed bursa." The statement read that Halladay can begin throwing in six to eight weeks, barring any setbacks.
The two-time Cy Young Award winner went 2-4 this season with an 8.65 ERA.
---Atlanta Braves reliever Jonny Venters had a second ligament transplant on his left elbow on Thursday and will miss the rest of the 2013 season and possibly all of 2014.
The 28-year-old had hoped to avoid surgery after receiving a platelet-rich plasma injection in his elbow April 2 and resting for four weeks. He was initially encouraged playing catch off flat ground two weeks ago, but the soreness returned when he began throwing off a mound.
Venters also had surgery to repair his ulnar collateral ligament while in the minors, and it cost him the 2006 season.
---Reid Ryan, the son of Hall-of-Famer Nolan Ryan, will become the Houston Astros' next president, according to an MLB.com report.
The job became available Monday when George Postolos resigned. Ryan will be introduced at a Friday news conference.
Ryan, 41, is the current president and CEO of Ryan Sanders Baseball, Inc., and runs the Triple-A Round Rock Express, near Austin, and the Double-A Corpus Christi Hooks. He also serves on the board of trustees for Minor League Baseball and the executive committee of the Triple-A Pacific Coast League.
---The Cleveland Indians optioned reliever Nick Hagadone to Triple-A Columbus on Thursday, after the lefty posted a 7.20 ERA in 13 appearances.
Hagadone, 27, worked 10 innings during that span, and allowed seven hits and 10 walks while striking out 12.
---The New York Yankees swapped pitching prospects Thursday, sending Brett Marshall to Triple-A Scranton/Wilkes-Barre and summoning Dellin Betances to the big club.
Marshall, 23, made his major-league debut on Wednesday, and allowed nine hits and five earned runs in 5 2/3 innings Wednesday in long relief. Looking for a fresh bullpen arm, the Yankees selected Betances, who has struggled as a starter before moving moved to the bullpen permanently last week.
---Right-hander Juan Arias was supsended for 50 days after testing positive for a performance-enhancing substance, the commissioner's office announced Thursday.
Arias, a pitcher in the Miami Marlins' organization, tested positive for metabolites of Stanozolol. The 18-year-old Arias is on the roster of the Marlins' Dominican Summer League team. The suspension will take effect when the Dominican season begins.