Patino (oblique) threw off a mound Tuesday, Marc Topkin of the Tampa Bay Times reports.
Patino resumed mound work in late April, and Tuesday's throwing session was the first time he threw off a mound since landing on the 60-day injured list in mid-April. The right-hander isn't eligible to rejoin the Rays until mid-June, but he should be able to start building back up now that he's throwing off a mound.