Awww, Jackson Avery (Jesse Williams) is all grown up!

In this sneak peek of Grey's Anatomy Season 9, Episode 11: "The End Is the Beginning Is the End" (January 17), the hot doc faces off with Arizona (Jessica Capshaw) over a medical decision, and he refuses to back down even when she argues against his plan.

Will his choice end up being the right one?

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.