Tampa Bay Rays right-hander Alex Cobb has thrown off a mound for the first time since being hit in the head by a line drive last month.

Cobb had the bullpen session before Friday night's game against the Chicago White Sox. There is no timetable for when Cobb will pitch in a game.

"The bullpen went great," Cobb said. "It felt like I had before I got injured. Surprising because it usually feels a little awkward out there when you haven't been on the mound for a while. Getting on the mound is, obviously, a step in the right direction. I don't think we're extremely close, but we're a lot faster along than we expected."

Cobb said his vertigo symptoms have improved over the past week.

"It's a little bit better, but it should within the next couple weeks, listening to what the doctors say, a drastic improvement in where we are right now," Cobb said.