Billy Wagner's agent, Bean Stringfellow (I swear), said this morning (via Smiley Rosenthal):
Six teams have already called to ask about his client.
All of them are interested in Wagner as a closer, Stringfellow said.
"That's what he is -- a closer," Stringfellow added.
Stringfellow declined to say which teams had inquired. But the Tigers, Astros, Rays, Orioles, Braves and Nationals are among the clubs with uncertainty at the back end of their bullpen.
There's your six teams.