Tel Cryptic

[4846]

17a, Non-U love match a cause of tears (5)
17d, Like player out of action, switch position and coach (3,5) ??? / ?T?G?
21a, Avoid shower, showing character fault (8) ????P???

[BlusterBuster]

17d off stage?

[Lie-in King]

17a Onion - o (love, as tennis) + (u)nion
17d Off-stage - 'off' (aposition for a switch) + 'stage' (coach)
21a Miss-pelt (would involve a "character fault")

[4846]

Thank You