Brevin Doll just broke the 3A state meet record in the 200m prelims by over a tenth of a second. Third fastest 200m in Iowa all-time. 21.10 seconds. Dwight has the all-time mark of 20.80
Dwight won the Big 10 in 10.31 in 1999. Best time in the 200 at Iowa was 20.99
Slower than Doll:
Cooper DeJean
Andy Brodell
Ihmir Smith-Marsette
Calvin Davis
James Townsend (alleged 10.5 IIRC)
Treye Jackson (10.5?)
Dennis Mosley? (alleged 9.6 100 yd, surely hand timed )
Robert Smith?
A 1972 RB recruit, Bobby Lawson, was advertised at 9.3. Never looked it.
2015 WR Emmanuel Ogwo was a big time track guy, running a 45 second 400 at Iowa. He may have run sub 10.4, but I don't know.
Edit: Ogwo's best times at Iowa were 10.47, 46.62 and 21.36. Weirdly, after transferring to TCU, his times got ridiculously slower.