Damian Lillard had 26 points and 10 assists for Portland, which has lost a season-high five straight games. LaMarcus Aldridge had 20 points and 14 rebounds, while Wesley Matthews added 21 points.
Mike Dunleavy had 14 points and Monta Ellis added 13 for Milwaukee, which is 5-2 since Jim Boylan took over as coach from Scott Skiles. Ilyasova shot 10 of 14 from the field and made all three of his 3-point attempts and all four of his free throws.
The Bucks went 3-1 on their trip. Milwaukee was coming off a historic victory of sorts, beating the Suns 115-107 Thursday night for its first win in Phoenix since the 1986-87 season, ending a stretch of 24 consecutive losses. The Bucks kicked off the trip by beating Toronto. They now head home to host Philadelphia.
Portland was one of the hottest teams in the NBA after winning 12 of 15 games between Dec. 10 and Jan. 10. But the Blazers have struggled with closing out games of late, losing each of their last five by six points or less.
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
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.