EUGENE -- At times, Oregon played better than it has all season and at others it reverted to the lulls and woes of a roster still jelling and finding its way.

Bol Bol led all players with 21 points and nine rebounds and after a passive first half, Payton Pritchard scored 16 of his 18 in the second. But it was the contributions of Abu Kigab, who scored nine off the bench, and Kenny Wooten (eight free throws and four blocks) that sparked No. 21 Oregon on numerous occasions in an 83-72 win over Green Bay at Matthew Knight Arena on Tuesday.

Kigab, who had his most scoring since reaching double-figures in back-to-back games in the second and third games of last season, had all seven of Oregon's second-chance points via three offensive boards.

"I try to do that every game, being aggressive going to the boards," he said. "I'm really good at offensive rebounding so I have to use my strength."

Green Bay came in shooting 46.2 percent from the field, best of any of Oregon's opponent to date. The Ducks held their first four opponents to 30.3 percent, fourth-best nationally, and contained the Phoenix to just 31.6 from the floor in the first half. But Green Bay went 15 of 31 (48.4 percent) in the second half, including 5 of 12 from behind the arc, to reach 39.1 for the game.

"Me and Bol, we do our best whenever they get inside, we try to block shots or at least try to contest it and I think we did a good job in the first half of that," said Wooten, who became the fourth Oregon player with 100 career blocks. "(In the second half) I think they were just getting to the basket too easy and we weren't able to adjust that fast. It was a bad job on our part."

The Ducks took early command and built a 19-8 lead in the first 7:22, but the Phoenix responded amid a long Oregon shooting drought and got to within four.

Bol, who notched his third 20-point game and fifth consecutive in double-figures to start his career, reeled off seven in a row for the Ducks, including their first three-pointer, to help give Oregon a 38-29 halftime lead despite Pritchard being just 1 for 4 from the floor and passing on a few early opportunities from behind the arc.

"I thought he was trying to make plays for people," Altman said. "He was trying to push it. We wanted to get some transition. We scored 38 the first half, Bol misses a dunk, we missed some free throws, we just weren't very sharp. I was disappointed in our focus at times, our coverage defensively and our toughness."

Green Bay (3-3) quickly got to within four to open the second half, but Oregon responded with a 9-0 run thanks to two three-pointers from Pritchard, and built it up to a 17-4 run with Kigab (four rebounds) adding the last five.

Paul White (four rebounds) and Will Richardson (8 of 10 free throws) each scored 10 points for Oregon, which out-shot Green Bay from the free-throw line 33 of 42 to 9 of 18.

In his 12th game in double-figures in the last 13 games dating back to last season, Sandy Cohen III scored 18 points and had six assists and ShanQua Hemphill and JayQuan McCloud each had 10 points for Green Bay.

After being held to just two points in the first 32 minutes, McCloud, Green Bay's leading scorer, went off for eight of nine points for the Phoenix, which again got to within two scores and stayed there for nearly all of the last six minutes. Green Bay got to within 74-70 with 2:02 to go before Oregon made nine free throws to close it out.

Altman was not happy with his team's defensive intensity, particularly in the second half.

"Our communication, our fighting the dribble, offensive rebounds, I knew they had eight points there that second half off offensive rebounds," he said. "Our defensive transition, defensive balance at times, guards are just standing there watching. They weren't going to the boards and they weren't getting back. ... Defensively we're not making good decisions. We sell out, we give up some easy baskets, in transition we don't talk and give up some easy baskets.

"We got a tremendous amount of work to do. I hope that we can learn from a win. A lot of times teams can only learn from losses. I hope we can learn from a win and do a much better job."

-- James Crepea | jcrepea@oregonian.com | @JamesCrepea