[5] Before attending the University of Missouri (NCAA Division I), he was named the Junior Dan Hodge Trophy and Wisconsin's Dave Schultz High School Excellence award winner.

[8] A true freshman, O'Toole racked up a 9–0 record in dual meets during regular season, competing solely along the Mid-American Conference due to COVID-19 restrictions.

[9] After claiming the Conference title, O'Toole competed at the NCAA tournament, where after making the quarterfinals, he was knocked into consolations by eventual finalist and third-seeded Jake Wentzel from Pittsburgh.

[10] He then notably stunned second-ranked Anthony Valencia from ASU by technical fall and fifth-ranked Zach Hartman from Bucknell by major decision before claiming third-place with a win over tenth-seeded Travis Wittlake from the Oklahoma State University, becoming an All-American and closing out the year at 19–1.

[22] Back to folkstyle, O'Toole won the Tiger Invite and went 12–0 in dual meets before becoming a two-time Big 12 champion, with a win in the finals over three-time All-American David Carr to tie the series at 2–2.