Following Tyrese Cooper and notice most meets in FL even the tiny district qualifier he ran at has 100/200 *and* 400 prelims and finals.
Why? There was only 14 schools.
Its an awful lot of running for a guy that wants to triple or even double. 6 races in one day in this case. It seems pointless. Why not just seed the 400 (and probably 200) as a final?
Obviously at a state finals or other big multi-day meet, prelim and final are to be expected.