@thegrayghost: You sure know your Daredevil, and I respect that, but don't go knockin' on Slade. Slade uses 90% o his brain, and his timing skills are borderline perfect, allowing him to tag flash and fight superhumans with relative ease. Daredevil's reflexes will help him immensely, but not by any means make him untouchable. Deathstroke has faced far worse.
But it is a good fight though. I just made a similar one if you want to check it out.
Deathstroke vs Daredevil (rules) I'd be happy to have you add to the argument on DD's side.
Slade shouldn't be capable of tagging the Flash but since in the DCU they allow characters without superhuman ability like Batman & Wildcat to do it, they think it's ok. Flash should be way to fast for Slade in every situation.