1. No. 7 (USA Today) USC (25-6, 7-2 Pac-12 Conference)

The Trojans reclaimed the top spot by sweeping previously red hot Arizona on the road. USC has won five in a row and eight of its last nine.

Last week: second, WWW at Arizona 4-1, 13-6, 10-9

This week: vs. No. 12 UC Santa Barbara (23-7, 2-1 Big West) (single game), vs. No. 5 UCLA (23-6, 10-2)

2. No. 5 UCLA (23-6, 10-2)

After beating the Beavers, the Bruins are alone atop the Pac-12. They keep switching with USC for first in the power rankings and should just play a series to settle it on the field.

Last week: first, LWW vs. Oregon State 3-2, 4-1, 10-5

This week: at No. 7 USC (25-6, 7-2)

3. No. 9 ASU (21-8, 9-3)

The Sun Devils won their series at Utah but had lots of trouble. ASU also limps into its series with Arizona, having needed extra innings to beat Utah — twice.

Last week: third, W vs. New Mexico State 7-3, WLW at Utah 5-3 (12), 6-5, 6-5 (10)

This week: at UNLV (12-18, 2-13 Mountain West) (single game), vs. No. 24 Arizona (22-9, 7-5)

4. No. 24 Arizona (22-9, 7-5)

The last three weeks, the Wildcats have gone all in: sweep or be swept. Still, if not for a bad inning in each game last week, things would have been much different.

Last week: fourth, LLL vs. USC 4-1, 13-6, 10-9

This week: at No. 9 ASU (21-8, 9-3)

5. California (21-9, 8-4)

The Golden Bears are a game ahead of the Wildcats in the standings but had a worse weekend than Arizona. Cal lost a series to lowly Washington State at home.

Last week: fifth, LLW vs. Washington State 4-2, 4-0, 6-2

This week: at Fresno State (16-17, 7-5 Mountain West) (one game), at Stanford (11-17, 0-9)

6. Oregon State (22-9, 5-4)

The Beavers lost their series last week at UCLA but not by much. Still, they have lost four of their last six.

Last week: sixth, WLL at UCLA 3-2, 4-1, 10-5

This week: at Oregon (18-15, 2-7)

7. Washington (18-12, 5-7)

Last week, the Huskies became the latest team to join in on the fun of sweeping Stanford. It’s Washington’s first-ever road sweep of the Cardinal.

Last week: seventh, WWW at Stanford 4-2, 13-1, 5-0

This week: at Washington State (14-16, 3-9)

8. Utah (10-19, 4-8)

Every year in every sport, there seems to be a Pac-12 team that stinks in nonconference play but is a pain in the ass in league play. Utah won a series at Arizona and was a run away from taking a series from ASU.

Last week: ninth, LWL vs. ASU 5-3 (12), 6-5, 6-5 (10)

This week: vs. Southeastern Louisiana (24-9, 11-4 Southland)

9. Washington State (14-16, 3-9)

The Cougars have lost 10 of their last 12, but they shocked California on the road to win their last series. Wazzu snapped a nine-game losing streak at Cal, a team that was ranked by at least one poll.

Last week: 11th, WWL at California 4-2, 4-0, 6-2

This week: at Gonzaga (15-16, 5-7 WCC) (one game), at Washington (18-12, 5-7)

10. Oregon (18-15, 2-7)

Remember when Oregon was ranked? That seems like ages ago after it got swept at home by Michigan State (15-14) and lost seven of its last eight.

Last week: eighth, W vs. Seattle 4-0, LLL vs. Michigan State 2-1 (11), 9-4, 7-4

This week: at Portland (7-26, 2-10 WCC) (one game), vs. Oregon State (22-9, 5-4)

11. Stanford (11-17, 0-9)

Since beating then-No. 12 Texas, the Cardinal lost 11 of its last 13. It seems Stanford couldn’t buy a conference win.

Last week: 10th, W vs. San Francisco 5-3, LLL vs. Washington 4-2, 13-1, 5-0

This week: Pacific (6-23, 5-7 WCC) (two games), at California (21-9, 8-4)

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