Bean Stringfellow, the agent for veteran closer Billy Wagner, said Tuesday morning that 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.
Stringfellow said Wagner's performance with the Red Sox - a 1.98 ERA in 15 late-season appearances - eliminated any doubt about his arm following elbow surgery.
"This is a normal offseason for him," Stringfellow said.

