1: Rip apart and mostly reject old ballplayer (9)
2: In a pickle about where one should apply the acne cream (2,3,4)
3: Stormed loudly and held the throne (7)
4: Mechanical parts preserved in green gin ester (7)
5: Idler, forced to exercise, could be this! (5)
6: I'll go geld guys - suprisingly he laughs raucously. (7, 6)
7: A little sports car, let to harassed Southern belle (8,5)
8: Worthless even when recycled (3)
13: User brought back radio part (wrecked sound) to return to use (9)
14: Friendly over age of consent? (9)
16: Gambler in the middle to call and raise (5,2)
17: Smile about Crazy Mel, a supposed source of trouble (7)
19: Perfect counter-spy equipment (3)
20: Express joy in slaughter (5)