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The Week 4 Collegiate Water Polo Association polls are out, and there was very little movement, and the movement that did happen came at the bottom of the polls. The one team that could have made the leap was the Navy Midshipmen who defeated then-No. 15 Princeton Tigers 13-10 this past weekend. Navy moved up two spots to No. 15 with Princeton and Santa Clara each dropping to No. 16 and No. 17.
The only other near shakeup came at the top of the polls when Cal nearly upset No. 1 USC Trojans, but USC was able to squeak by and win 7-6. The top 12 spots ended up as the same as did the overall top 20 in this poll.
There could be some movement next week as the SoCal Tournament features many of these ranked teams.
| Rank | Team | September 19 Poll | Points |
| 1 | University of Southern California |
1 | 100 |
| 2 | University of California-Los Angeles |
2 | 95 |
| 3 | Stanford Univiersity |
3 | 90 |
| 4 | University of California |
4 | 85 |
| 5 | University of California-Irvine |
5 | 80 |
| 6 | University of California-Santa Barbara |
6 | 75 |
| 7 | Pepperdine University |
7 | 70 |
| 8 | University of the Pacific |
8 | 65 |
| 9 | Long Beach State University |
9 | 60 |
| 10 | Loyola Marymount University |
10 | 55 |
| 11 | University of California-San Diego |
11 | 50 |
| 12 | University of California-Davis |
12 | 45 |
| 13 | Brown University | 13 | 36 |
| 14 | United States Air Force Academy |
14 | 35 |
| 15 | United States Naval Academy |
17 | 30 |
| 16 | Princeton University |
15 | 24 |
| 17 | Santa Clara University |
16 | 19 |
| 18 | California Baptist University |
18 | 16 |
| 19 | St. Francis College (N.Y.) |
19 | 12 |
| 20 | Concordia University (Calif.) |
20 | 9 |
| RV | University of La Verne |
NR | 1 |
| RV | Pomona-Pitzer Colleges |
RV | 1 |
| RV | Johns Hopkins University | RV | 1 |