The Bucks led by 16 with 3:45 remaining in the game, but the Blazers managed a 12-0 run to cut it to 104-100, with Lillard and Matthews hitting back-to-back 3-pointers. But Jennings and Ellis made six of eight free throws in the final minute for Milwaukee, while Lillard missed two 3-point tries.
Jennings and Ilyasova each had 15 points in the first half and Milwaukee led by 17 going into the break after opening up a big first-quarter lead with a 17-0 run.
The Bucks extended their lead to 22 points midway through the third quarter.
Portland briefly cut the lead to eight when Lillard beat the third-quarter buzzer with a 3, but the Bucks went on a 7-0 run to open up the fourth, with Beno Udrih feeding Ellis for a dunk and Dunleavy hitting a 3.
J.J. Hickson had 15 points and 12 rebounds for Portland. Nicolas Batum was just 2 of 9 for seven points after injuring his wrist in practice Friday. However, he had seven rebounds and five assists.
Notes: Milwaukee C Larry Sanders was ejected late in the third after picking up two technical fouls for arguing with official Danny Crawford. . Rookie C Meyers Leonard returned to practice Friday for Portland after missing 10 consecutive games with a sprained ankle sustained Dec. 29 against Philadelphia. He dressed but did not play. . The Blazers had 19 turnovers for the second straight game.