The 2021 Mound City Junior High Quad was held April 6, 2021. Results are posted online but the results for the East Atchison 4×100 Meter Relay and 4×200 Meter Relay were incorrect.

(Some relay runners and the order they actually ran may be different than what is listed in the official results provided to the newspaper.)

The correct results for those two teams are:

4×100 Meter Relay – 1st, East Atchison (Tate Johnson, Owen DeRosier, Colton Hall, Alex Erickson), 53.97; 2nd, Rock Port (Corbyn Jakub, Camden McEnaney, Dylan Lair, Zane Cook), 55.55

4×200 Meter Relay – 1st, Rock Port (Corbyn Jakub, Bracton Cook, Ryan Lucas, Dylan Lair), 1:56.73; 2nd, East Atchison (Cameron Brooks, River Dow, Colton Hall, Tate Johnson), 1:58.28