1: Arena performer's damage involving time and trouble (7)
2: Rejections concern enthusiasts (7)
3: Without it, set call for recompense (3)
4: Oilwell fireman Red's commercial run (5)
5: Telekinesis pinches Albanian coin (3)
6: Treason destroyed Washington insider (7)
7: Prepares for rest? I object, returning firstborn's gifts. (7)
8: Identified slugger around noon (7)
12: Crew member is one in operating room (3)
13: Mom going topless--that's something else (5)
15: Assistants' crackpot ideas (5)
16: The ex-President's back; time to withdraw? (7)
17: Bird seen in springtime? Nonsense! (7)
18: Bill, in a manner of speaking (7)
19: Its a firm, small lettuce (3)
20: Oration garbled in Canadian province (7)
21: These often go with crosses but they mean nothing really! (7)
23: Nothing, nothing in shape (5)
26: One final, huge Greek goddess (3)
27: Ran into a section of the time-table (3)