Kansas St. holds off S. Illinois 31-23 after losing Thompson

Kansas State quarterback Will Howard (15) gets past Southern Illinois cornerback James Ceasar (2) to run the ball during the first half of an NCAA college football game, Saturday, Sept. 11, 2021, in Manhattan, Kan.(AP Photo/Charlie Riedel)

Kansas State running back Deuce Vaughn (22) runs into the end zone to score a touchdown during the second half of an NCAA college football game against Southern Illinois, Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23 (AP Photo/Charlie Riedel)

Kansas State quarterback Will Howard (15) celebrates with teammates after scoring a touchdown during the first half of an NCAA college football game against Southern Illinois, Saturday, Sept. 11, 2021, in Manhattan, Kan. (AP Photo/Charlie Riedel)

Kansas State quarterback Will Howard slides after running the ball during the first half of an NCAA college football game against Southern Illinois, Saturday, Sept. 11, 2021, in Manhattan, Kan.(AP Photo/Charlie Riedel)

Kansas State running back Deuce Vaughn (22) gets past Southern Illinois linebacker Makel Calhoun (8) and safety Jakari Patterson (6) during the second half of an NCAA college football game, Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23(AP Photo/Charlie Riedel)

Kansas State head coach Chris Klieman, left, and Southern Illinois head coach Nick Hill greet each other after their NCAA college football game, Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23 (AP Photo/Charlie Riedel)

Kansas State running back Deuce Vaughn (22) can't reach a pass as he is chased by Southern Illinois linebacker Zach Burrola (10) during the second half of an NCAA college football game Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23 (AP Photo/Charlie Riedel)

Kansas State running back Deuce Vaughn (22) celebrates with teammates after scoring a touchdown during the second half of an NCAA college football game against Southern Illinois, Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23 (AP Photo/Charlie Riedel)

Southern Illinois quarterback Nic Baker (8) funnels the ball as he is tackled by Kansas State defensive end Felix Anudike (91) during the second half of an NCAA college football game, Saturday, Sept. 11, 2021, in Manhattan, Kan. Kansas State won 31-23 (AP Photo/Charlie Riedel)