1: A prison is in commotion (5)
4: Giving up silly run, Reds tack on a couple of errors (9)
7: Vegetable has red cap (5)
8: Famous spy taking leave with odd instrument (5,4)
10: Person with fixed notions is pretty sore, upset about the introduction of Ebonics (11)
12: Back out of agreement new legal group sent back (7)
13: Apparent place in the tall grass (7)
14: Current interruption has Republican upset (7)
16: Putting in a nugget, maybe, put a point to venerated one? (7)
18: Farmyard creatures defining an unlikely story? (4,3,4)
20: Nunn completes more circuits than Gore coming around Canary Island seaport (3,6)
21: A chair may be material (5)
22: E.g., lead Boston finally out of cellar, American League (4,5)
23: 'Pops' is very unhappy in retrospect (5)