| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 2 | Clayton High School | B | Huyette | Irving | Aningo | Dixson | NT | Unverified: |
| 3 | Kirkwood High School | E | Washington | Weinberg | Kring | Webb | 1:50.00 | Unverified: |
| 4 | Affton High School | A | Allen | Williams | Mitchell | Lovelace | 1:43.81 | Verified |
| 5 | Kirkwood High School | F | Wollaeger | Bergmann | Lindsay | Burns | 1:46.00 | Unverified: |
| 6 | Parkway North High School | A | Luckett | Royal | Stovall | Blake | NT | Unverified: |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Kirkwood High School | D | Barry | Earl | Loper | Griffin | NT | Unverified: |
| 2 | Kirkwood High School | C | Boswinkel | Johnson | Steuby | Walter | 1:40.00 | Unverified: |
| 3 | Kirkwood High School | A | Webb | Welch | Edwards | Richardson | DQ | Unverified: |
| 4 | Lutheran North High School | B | 1:32.22 | Verified | ||||
| 5 | Lutheran North High School | A | Jefferson | Chapman | Long | Stephenson | 1:32.22 | Verified |
| 6 | Kirkwood High School | B | Araneta | Daniels | Cauble | McKee | 1:38.00 | Unverified: |
| 7 | Clayton High School | A | Chatman | Nelson | Anderson-Jennings | Handzic-Smith | DQ | Unverified: |
| 8 | St. Dominic High School | A | Wulkopf | Markowski | Phillips | Livers | 1:43.62 | Verified |