Martin and Baldwin combined to shoot 12 of 22 from the field and Butler (6-2) shot 49.1 percent (26 of 53). Butler led 8-0 and never trailed. Javon Bess made a pair of free throws 4 1/2 minutes into the game for Saint Louis' (3-4) first points.
Butler closed the half on a 6-0 run for a 42-13 led and were never challenged the rest of the way. The Billikens now have lost four straight by an average margin of 18.2 points per game.
Javon Bess scored 22 points and had 10 rebounds for Saint Louis.
Jones is a rim protector who will develop under Shaka Smart and the Longhorns.
Mark Schlabach reports the latest on Kansas coaches involved with Adidas in Silvio De Sousa's recruitment.
Text messages presented by defense attorneys on Monday indicated the Kansas coaches were at least aware of former Adidas consultant T.J. Gassnola's involvement in the Jayhawks' recruitment of current player Silvio De Sousa, a native of Angola.