Two still to do this week and I've got answers which partly fit the clues, so if anyone can please explain them fully I'd appreciate it:
21a "Cook batting after introduction of off-spinner Root" (6) O ? I ? I ? possibly ORIGIN which uses batting(= in) and root(meaning);
3d "Scraps in the shower after match" (8) ? O ? F ? T ? I possibly CONFETTI which may mean scraps.