EAST LANSING, Mich. (AP) - Gary Harris made his home debut one to remember for No. 21 Michigan State.
He scored 19 points, including 14 in a lopsided first half, to lead the Spartans past Texas Southern 69-41 Sunday.
Branden Dawson had 13 points and six rebounds, while Adreian Payne added nine points and seven rebounds for the Spartans, who extended their string of wins in home openers to 36.
"It wasn't a great performance," Michigan State coach Tom Izzo said. "I'm still a stage of trying to figure out who's going to be in the playing group. We had 10 guys play 12 minutes or more, which is almost impossible to do."
Coach Tom Izzo's team also got good work from reserves. Harris' fellow freshmen Denzel Valentine and, in his first action after a lower-back injury, Matt Costello combined for 12 points, six rebounds, five assists and four blocked shots.
Fred Sturdivant had 10 points and 12 rebounds for Mike Davis' Tigers (1-3).
Michigan State had a 46-10 advantage in points in the paint, showing its determination to run, then pound the ball inside. The Spartans also controlled the game in most other departments: 18-0 in fast-break scoring, 46.7-21.1 percent shooting from the field.
"We got a lot of points off layups," Izzo said. "We're still not getting the ball inside and getting enough inside-out. Our 3-point shooting selection was average at best."
It was Michigan State's first game in the Spartan Showcase, a five-team round-robin event over an eight-day span. The Spartans will host Boise State on Tuesday, Oakland on Friday and Louisiana-Lafayette next Sunday before traveling to Miami for the Big Ten/ACC Challenge.