Joba Chamberlain expects to be back on a mound in July, according to Yankees general manager Brian Cashman.

The reliever, who suffered an ugly injury to his right ankle in a freak accident on a trampoline Thursday, is likely out for the season with an open dislocation — meaning the bone tore through ligaments and broke through the skin, but CT scan results yesterday revealed no microfractures.

"We're happy about that," Joe Girardi said, adding no further surgery is planned.

The 26-year-old is being held at the hospital until today for precaution against infection.