PTR
Striker
At no point does the athlete use a technique that's worse than another one though, and especially, they don't have 2 events where the lesser technique is used.You can do that to almost any event though, walking, hurdles, steeplechase, different weights in boxing judo etc.
I would scrap breaststroke mind. Just deliberately swimming slowly
Like there isn't 2 high jumps, one where you have to jump forwards and one backwards.