1: Dizzy Ben is a playwright (5)
3: 'Wrong and sick,' I quote... almost (7)
4: Nothing, nothing in shape (5)
5: It's believed to be average grass (5)
6: Belli's case, perhaps! (5)
8: Cot is unmade for short month in fall (3)
9: Accommodate bear (3,2)
10: Whacked repeatedly in the ear (5)
14: Abridged fibre project (3)
16: First get a French weapon. (3)
18: A supporter starting to mock President Garfield's middle name (5)
19: Gnomelike feature of parallel fingers (5)
21: Plead with a representative to use a new type of role (7)
22: Keep firm about the ring (5)
23: Goddess is against holding back one Quebecoise (5)
24: Reproduction? From him? A gelding? (5)
25: Managed in lower Antwerp (3)
26: Run around near a stadium (5)