TAMPA, Fla. -- Joba Chamberlain has cleared another key hurdle just three months after suffering a serious ankle injury.

The Yankees reliever, who dislocated his right ankle bouncing on a trampoline with his son March 22, threw 20 pitches Monday in his first batting-practice session since getting hurt.

"It felt good just to get out there," Chamberlain said. "Get a feel for the [strike] zone. Where guys are standing. It's good to get their reaction. You're able to correct things when you see what you missed."

Chamberlain, who was coming back from Tommy John elbow ligament replacement surgery at the time of the ankle injury, is scheduled to pitch batting practice again Friday. That could put him in line to make his first appearance in a minor-league game in two to three weeks.

"I couldn't ask for anything better as far as how my arm feels and everything up to this point," Chamberlain said.

Heavy rain from Tropical Storm Debby during the past couple of days prompted Chamberlain to throw in an indoor batting cage and not on the field at the Yankees' minor-league complex.

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"One-nothing, me," Chamberlain said with a smile. "It's great to have these cages in here. You don't miss any work. Hopefully, the rain holds off so we can get out on the field Friday."

Chamberlain might try to work out with the team when the Yankees play a three-game series against the Tampa Bay Rays on July 2-4 in St. Petersburg.

Also, David Aardsma, who had Tommy John surgery last July, is scheduled for his third Gulf Coast League appearance Tuesday, weather permitting.

The former Seattle Mariners closer has thrown three shutout innings, including a pair Saturday. Aardsma felt good after throwing in the outfield Monday during a lull in the inclement weather.

Pedro Feliciano, rehabbing a left shoulder injury, will throw off a full mound for the first time Tuesday. The lefthanded reliever is optimistic that he will pitch in the majors this season.