ATLANTA -- Kris Medlen underwent successful Tommy John surgery on Wednesday in Birmingham, Ala. Noted surgeon Dr. James Andrews performed the procedure.

Medlen tore the ulnar collateral ligament in his right elbow during an Aug. 4 start against the Mets. The 24-year-old right-hander will likely need at least 12 months of rehab before being cleared to pitch again.

After beginning this season in the bullpen, Medlen strengthened the starting rotation while Jair Jurrjens was sidelined for two months. The Braves won 13 of the 14 games started by Medlen.

Braves place Glaus on the 15-day DL

ATLANTA -- After learning that the Braves acquired Derrek Lee to serve as their starting first baseman for the remainder of this season, Troy Glaus said that he didn't hold any "ill will" toward the organization. Instead, he seemed excited about the opportunity to spend the latter part of this month reacquainting himself with the third-base position.

The Braves placed Glaus on the 15-day disabled list Wednesday with what was defined as inflammation around his left knee. Once the 34-year-old veteran rests for about five or six days, he'll begin a rehab assignment with Triple-A Gwinnett. These games will allow him the chance to play third base and also regain some of the confidence he's lost while hitting .175 with two homers and a .266 slugging percentage over his past 45 games.

"I've played way more games over there than anywhere else," said Glaus, who primarily played third base before attempting to play first base this year.

If Glaus proves that he's still capable at third base and able to distance himself from the leg discomfort that has plagued him most of this season, he would enhance the flexibility that manager Bobby Cox has on his roster.

With Martin Prado and Omar Infante, the Braves have a pair of players that they know can adequately fill the roles at second base and third base. But if Glaus can at least prove serviceable at third base, he could see some time there in September.

Whatever happens to the Braves, they certainly recognize that they likely wouldn't be in first place right now if Glaus hadn't carried them while hitting .316 with 14 homers in a 47-game span that began on May 1 -- when they were still reeling from a nine-game losing streak.

"[His legs] have been bothering him," Cox said. "He's a tough guy. He never complains about anything. I can't say enough about what he's done."

Glaus is 34 plate appearances away from raising his season total to 500 and consequently landing his third $350,000 bonus. Having already earned two of these bonuses based on plate appearances, he will make at least $2.7 million via this one-year contract with the Braves.

Worth noting

Brandon Hicks was promoted from Triple-A Gwinnett on Wednesday to fill the roster spot that was opened when Troy Glaus was placed on the disabled list. When newly-acquired first baseman Derrek Lee joins the Braves on Friday, Hicks will likely be sent back to Gwinnett. ... ESPN will carry the Sept. 12 game against the Cardinals as its Sunday Night Game of the Week. The game will now start at 8:07 p.m. ET. ... Chipper Jones was able to hobble around the Braves' clubhouse without the assistance of crutches on Wednesday. Jones, who had his torn left ACL surgically repaired on Saturday, said that he's encouraged by the daily improvements he's seen with his range of motion.