I'm pretty sure match sprints are Cat 2+ for elite nationals. I was looking at this a little last year. Because I am OBRA, it is unclear to me what my category would be if I were to buy a USAC license to race nationals (relevant because masters nats are right next door this year). If I need to earn my way up to Cat3 or Cat2 from scratch, I'd have to do a sht ton of racing this year out-of-state.
__________________
Cat 2 Track, Cat 3 Road.
"If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --
the tiniest sprinter