| Rank | Team | Comments | Prior |
| 1 |  | Florida | Kelly Barnhill's perfect game on Sunday against Georgia Southern capped off a 6-0 week for Florida. | 1 |
| 1 |  | Washington | Huskies are 18-0 as they beat Texas, Texas A&M, Notre Dame, Nebraska and Long Beach State to highlight their week. | 4 |
| 3 |  | UCLA | UCLA is 15-0 on the season after going 5-0 at the Mary Nutter Classic, including a 9-1 win over LSU. | 2 |
| 4 |  | Arizona | Arizona stepped up in a big way against Oklahoma on Saturday as they beat the Sooners 2-0. | 8 |
| 5 |  | Baylor | Baylor swept a doubleheader against Abilene Christian to improve to 9-0 on the season. | 7 |
| 6 |  | Oklahoma | Sooners went 3-1 in Palm Springs dropping a 2-0 pitchers duel against Arizona on Saturday. | 3 |
| 7 |  | Tennessee | Tennessee is on fire right now as they went undefeated in Palm Springs with wins over Oregon and Oregon State. | 12 |
| 8 |  | Oregon | Oregon continues to pitch well but struggled to score runs against Texas A&M and Tennessee. | 5 |
| 9 |  | Texas A&M | Aggies get a big win over Oregon but did lose to Nebraska and to Washington in a 4-3 thriller on Saturday. | 6 |
| 10 |  | Alabama | Crimson Tide split their two games with Florida State and are 9-2 on the season. | 11 |
| 11 |  | Georgia | Georgia outscored their opponents 34-0 this week to win the Georgia Classic. | 15 |
| 12 |  | LSU | LSU went 4-2 this week as they swept the Libby Matson Tournament, but struggled against UCLA and Oregon. | 10 |
| 13 |  | Florida State | Seminoles went 3-3 this week as they did beat Alabama once but lost games to McNeese State and South Alabama. | 9 |
| 14 |  | Ole Miss | Ole Miss beat SIU-Edwardsville 1-0 in their lone game of the week. | 14 |
| 15 |  | Auburn | Tigers went 3-2 out in Palm Springs this week with solid wins against Notre Dame and Oregon State. | 13 |
| 16 |  | California | Cal went 4-1 at the Mary Nutter Classic and they continue to pitch very well. | 16 |
| 17 |  | Ohio State | Buckeyes went 3-0 in Texas as they beat the Longhorns 8-5 and swept two games against Wichita State. | 19 |
| 18 |  | Minnesota | Minnesota went 5-0 down in Orlando at the D9 Citrus Classic with wins over Kentucky and South Alabama. | 17 |
| 19 |  | South Carolina | Gamecocks knocked off North Carolina and went 5-0 at the D9 Citrus Classic in Orlando. | 20 |
| 20 |  | Arizona State | A solid week for Arizona State as they beat Miss. State and Cal State Fullerton at the Mary Nutter Classic. | 21 |
| 21 |  | Louisiana | Ragin' Cajuns dropped one against North Florida 1-0, but finished the week 4-1. | 18 |
| 22 |  | McNeese State | Cowgirls picked up two very nice signature wins this week against Florida State and Arkansas. | NR |
| 23 |  | Arkansas | Razorbacks are 9-1 so far in 2018 and looked primed to get back to the NCAA Tournament. | NR |
| 24 |  | Kentucky | Kentucky went 4-1 down in Orlando and are continuing to get better in the early stages of the season. | 24 |
| 25 |  | Utah | Utes are 6-5 on the season after a solid 4-2 performance at the Mary Nutter Classic. | 25 |
