EUGENE — The battle of first and worst in the Pac-12 was over before it started.

Colorado never had a chance of beating No. 4 Oregon, which scored more consecutive points to start Sunday’s onslaught than the Buffaloes did in the entire first half, but CU did win the tip off.

Ruthy Hebard had 24 points and 12 rebounds and all nine players scored for Oregon, who dominated every statistic in a 102-43 destruction of Colorado at Matthew Knight Arena.

“I thought we had a good game plan coming in and we executed it,” Oregon coach Kelly Graves said. “I thought we put a lot of pressure on them. They were on their heels the whole time. In the second half, they got their legs under them and started to play better but I thought early on, that’s where the game was won.”

Oregon (21-1, 10-0 Pac-12) opened with a 16-0 run and held Colorado without a field goal in a 27-2 first quarter.

The Buffaloes finally made a shot from the field on their 15th attempt, but the Ducks kept pouring it on. Maite Cazorla scored all of her 16 points in the first half to give Oregon a 54-13 lead at the break.

“Coach wanted me to be more aggressive," Cazorla said. "So I tried to get in the paint, score, be aggressive and fast.”

Hebard scored nine of Oregon’s 20 points in the third quarter and added her 10th field goal in a perfect shooting performance from the floor early in the fourth.

Satou Sabally had 15 points and four rebounds and Sabrina Ionescu had 11 points, seven assists and five rebounds for Oregon, which didn’t play any of its starters more than 27 minutes and all nine players saw at least 19 minutes an dscored at least five points.

“It was great; this is just what we needed," Graves said. "It was a hard fought game (against Utah) on Friday night — well they’re all hard fought but it was nice to see that we really got into a good offensive flow. ... I thought for four quarters tonight we really moved the ball well, shared the ball and it was a good effort.”

The Ducks scored 30 points off 18 Buffaloes turnovers and won the paint 52-14 and 28-7 on fast breaks.

Mya Hollingshed had 17 points and 10 rebounds for Colorado (10-11, 0-10 Pac-12).