Riverside City College Assistant Athletic Director Jim Elton has resigned, according to an email blast.

Elton, who also coached tennis during his 21 years at the college, stated in part “I have resigned as assistant athletic director to focus my efforts on my pursuit of a leadership position at other institutions.”

Elton was sidelined in February 2015 after suffering a brain injury in Las Vegas.

It is unclear who will take over his position and when RCC will begin its search for a new assistant athletic director.

“Elton resigned from the assistant athletic director position, but is still employed by the kinesiology department as a professor, and with the athletic department as the assistant golf coach,” Athletic Director Jim Wooldridge said.

Jim Elton declined to comment on his resignation as the assistant athletic director for personal reasons.

According to the RCCD job opening page the assistant athletic director’s position has not been listed.

Updated 8/25/16 4:44 p.m : With comment from Jim Wooldridge and no comment from Jim Elton.