ST. PETERSBURG, Fla. -- The Rays have claimed left-hander John Gaub off waivers from the Cubs.

Gaub, 26, went 0-0 with a 6.75 ERA in four appearances for the Cubs in 2011.

In five Minor League seasons, Gaub is 12-12 with a 3.60 ERA in 171 appearances.

He has been added to the Rays' 40-man roster, but he will not be part of the 25-man Opening Day roster. The move brought the 40-man roster to its full capacity.