Chicago's Bobby Portis spent all of last year proving his motor was one of the highest in college basketball while playing for the Arkansas Razorbacks.
The former SEC Player of the Year, the 22nd overall pick in this year's draft, provided that same energy and more Wednesday night in the NBA Summer League.
Portis had 16 points, 10 rebounds and two blocks to help the Bulls to a 91-73 win over the Cleveland Cavaliers at the Cox Pavilion in Las Vegas.
Portis, who stands at 6 feet, 11 inches, continued to show the hustle that made him a college star in 28 minutes of action on Wednesday. He scored 10 of his 16 points in the second half and finished 7 of 13 from the floor to lead the high-octane Bulls.
With the Bulls holding a lead for most of the game, Portis never slowed and was constantly seen running the floor and diving for loose balls. He highlighted the Bulls' 9-2 run to start the third quarter with an emphatic alley-oop dunk.
Doug McDermott, a former Creighton star, and Vander Blue, a Marquette product, also supplied 16 points apiece for the Bulls, who shot 36 of 74 (48.6 percent) from the field and 8 of 16 from the 3-point line.
Blue added eight rebounds and three assists and was a perfect 6-for-6 from the free-throw line.
Tyrus McGee also scored 14 points for Chicago, which led 41-33 at halftime. The Bulls finished with a 41-33 rebounding advantage and led by as many as 20 points in the third quarter.
D.J. Seeley led the Cavaliers with 16 points on 6 of 14 shooting. Quinn Cook, an undrafted point guard out of Duke, had 10 points, four rebounds and three assists.
Tyler Haws and Keifer Sykes each finished with nine points, and Jerrelle Benimon pulled down eight boards for Cleveland, which got eliminated after posting a 1-3 record.
The Cavaliers were 28 of 70 (40.0 percent) from the floor, including 4 of 20 (20.0 percent) from long distance. They also went 13-for-23 (56.5 percent) from the line.
Chicago (2-2) returns to action Thursday, when it faces the No. 2-seeded Boston Celtics (4-2) at 7 p.m.