1: Large strumpets turned a trick? (9)
 2: Retinue and company again go round, get back (7)
 3: Logical oil Polish chap applied (13)
 4: Extend a term of imprisonment (7)
 5: One final, huge Greek goddess (3)
 6: Bouquets of flowers, freshly opened (5)
 8: San Francisco athlete captures wild boar, an obvious choice (2-7)
 10: Ellen, golf wife, creates a sense of joint interest (6,7)
 13: Old file is destroyed in valuable Arab lands (3,6)
 16: Slippery deck spots are on either side (9)
 18: With reference to above -- Phys. Ed. Department has renewed contract (7)
 19: Magician's handy craft of little importance for the auditor (7)
 20: Small feature role has arrived, love (5)
 23: Hear Native American appeal (3)