Always moving forward, Gregg Marshall has No. 20 Shockers climbing to top of Missouri Valley

Wichita State coach Gregg Marshall yells to Ehimen Orukpea during the first half of an NCAA college basketball game against Creighton on Saturday, Jan. 19, 2013 at Charles Koch Arena in Wichita, Kan. (AP Photo/The Wichita Eagle, Travis Heying) (The Associated Press)

Wichita State guard Malcolm Armstead (2) shoots a 3-pointer over Missouri State forward Gavin Thurman (20) during the second half of an NCAA college basketball game, Wednesday, Jan. 23, 2013, in Springfield, Mo. Wichita State won 62-52. (AP Photo/David Welker) (The Associated Press)

Wichita State coach Gregg Marshall could be plying his trade in a BCS conference by now. He's turned down more than a few opportunities.

First it was to stay at tiny Winthrop, where he won seven conference titles, and more recently to stay at Wichita State, where he's won at least 25 games three straight seasons.

His 20th-ranked Shockers are leading the Missouri Valley with their sights already set on a March run to remember. They're 18-2 overall and are coming off wins over then-No. 12 Creighton and Missouri State.

Marshall is leaving open the possibility of moving onto a more high-profile gig, but he also points out "you can't buy happy," and he's never happier than when he's winning games.