Credit: Video Still

It looks like Derek's (Patrick Dempsey) surgery-less days may be coming to an end on Grey's Anatomy Season 9. But first, he's going to have to put up with an unusual treatment on Episode 11: "The End Is the Beginning Is the End" (January 17).

In this clip Callie (Sara Ramirez) suggests Derek build up strength by playing ping-pong. A lot of ping-pong. And surprise! She's not his partner.

Who does she rope into helping with this odd task? Watch the sneak peek below to find out.

Credit: ABC © 2013 Disney ABC Television Group Photo: Preview Clip of Grey's Anatomy Season 9, Episode 11: Ping-Pong ... For Eight Hours? (VIDEO)

For more Grey’s spoilers, click here.

Catch the next new episode of Grey’s Anatomy on Thursday, January 17, 2013, at 9 p.m. ET/PT on ABC.