Matt Painter and company already have three committed for the 2012 class and on Saturday they picked up their fourth member of the 2013 class.
Derek Willis, a 6-foot-9 slender power forward out of Mt. Washington (Ky.) Bullitt East, committed to Painter and his program during an unofficial visit Saturday afternoon.
"Yes he committed today around 1:30," Willis' father -- Del -- confirmed to Scout.com.
"The academic and basketball setting was perfect for Derek and coach Painter is dedicated to Purdue and will be even after Derek graduates," the elder Willis said. "Coach Painter and his staff are a class act."
Willis averaged just over 13 points and nearly nine boards per game during his sophomore campaign.