Following the first weekend of the 2018 season, Florida and Oregon State held onto the top two spots in the CBI Composite Poll.
The USA Today Coaches poll did not update this week, so the CBI Composite Poll used the other four national polls.
The Gators swept a three-game home set with Siena to kick off the season. UF is first in all four polls.
The Beavers won three times in Arizona to begin the campaign. OSU is second in all four polls.
Arkansas rose two spots to third after a three-game home sweep of Bucknell. The Razorbacks are third in one poll and fourth in the other three.
Texas Tech took four from Maine and dropped one place to fourth. The Red Raiders are third in two polls and fifth in the other two polls.
Florida State beat Xavier three times and sit in fifth. The Seminoles are third in one poll, fourth in one poll and fifth in the other two.
Southern Miss (14) and Ole Miss (18) entered the poll this week. LSU and Mississippi State dropped out of the poll.
| CBI Composite Poll (2/20) | BA | CB | D1 | NCBWA | US | Composite | Last rank | |
| 1 | Florida (3-0) | 1 | 1 | 1 | 1 | 4 | 1 | |
| 2 | Oregon State (3-0) | 2 | 2 | 2 | 2 | 8 | 2 | |
| 3 | Arkansas (3-0) | 4 | 3 | 4 | 4 | 15 | 5 | |
| 4 | Texas Tech (4-0) | 5 | 5 | 3 | 3 | 16 | 3 | |
| 5 | Florida State (3-0) | 3 | 4 | 5 | 5 | 17 | 4 | |
| 6 | North Carolina (2-1) | 6 | 7 | 6 | 8 | 27 | 7 | |
| 7 | Kentucky (4-0) | 8 | 8 | 8 | 6 | 30 | 8 | |
| 8 | TCU (2-1) | 7 | 9 | 7 | 7 | 30 | 6 | |
| 9 | Stanford (3-0) | 9 | 14 | 12 | 9 | 44 | 14 | |
| 10 | UCLA (3-0) | 12 | 11 | 11 | 12 | 46 | 12 | |
| 11 | Vanderbilt (2-1) | 18 | 6 | 13 | 11 | 48 | 10 | |
| 12 | Texas A&M (3-0) | 10 | 25 | 10 | 10 | 55 | 13 | |
| 13 | DBU (3-0) | NR | 10 | 16 | 18 | 59 | 17 | |
| 14 | Southern Miss (3-0) | 17 | 13 | 15 | 15 | 60 | NR | |
| 15 | Clemson (3-0) | 11 | 12 | 25 | 16 | 64 | 18 | |
| 16 | Louisville (3-0) | 19 | 18 | 14 | 13 | 64 | 16 | |
| 17 | Virginia (2-1) | 15 | 16 | 17 | 17 | 65 | 19 | |
| 18 | Ole Miss (3-0) | 16 | 29 | 9 | 14 | 68 | NR | |
| 19 | Cal State Fullerton (0-3) | 13 | 12 | 22 | 22 | 69 | 9 | |
| 20 | Texas (2-1) | 14 | 19 | 19 | 19 | 71 | 20 |