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ACROSS

 1 Names for two men, overlapping with no name (7)

 5 Shorten a span (7)

 9 Summarize Indiana athlete’s comeback (5)

10 Poison-pen post on cons (9)

11 Failing criminal? That’s perfect (8)

12 Three months with a computer? (6)

14 Leave one who just tagged somebody? (4)

15 Like an injured joint, __________ between C and E (10)

18 Exploring underground, Louis XIV clutches fur, mostly (10)

19 Exclude gravity? When a universe forms, it might be big (4)

22 Direct baseball team to swallow drink in retreat (6)

24 Rates female donkeys? (8)

26 Scattered equipment for winter fun around front of Philadelphia hockey arena (9)

27 Feeble echo conceals parasite (5)

28 Latin American dictator who succeeded Enotsega and Eznorbega? (7)

29 Enjoy almost everything about numbers (7)

DOWN

 1 Ruminant’s mistake: eating the first rabbit’s head (7)

 2 Fruit in tree can burst (9)c

 3 Undulate with a great hit on the radio after the intro (6)

 4 Cuts up insects with utensils (10)

 5 Snakes, as an afterthought (4)

 6 Disavow blend of ecru neon (8)

 7 Material taken from inside the earth, upward (5)

 8 Guaranteed goal involving deceptive ruse (7)

13 Liar initially trapped in difficult situations, fingered and caught unawares (10)

16 Temporary shelter lets in horrible rains (9)

17 Observers’ gold cube, formerly lacking face (8)

18 Walks all over relative (7)

20 Young woman circling New York neighborhood gets some fuel (7)

21 Pequod’s chief, for example, when at large, for example! (6)

23 One of twelve leaders in Jerusalem, urging right of return (5)

25 Whirlpool Galaxy captivates Russian woman (4)

SOLUTION TO PUZZLE NO. 3328
 

ACROSS 1 END + OWS 4 anag. 10 INSUR (anag.) + ER 11 OR + LANDO 12 hidden 13 PRIM + E 14 [w]IMPS 15 J + URY-RIGGED (anag.) 19 LOS + TIN + [r]AF OG (rev.) 23 I + TEM (rev.) 26 hidden 27 AU + STRA (rev.) + LIA[r] 28 S(CH)OOLS (solos anag.) 29 T(IM)PANI (rev.) 30 CO(LOSS)AL 31 ANAL OG (rev.)

DOWN 1 anag. 2 DES(KT)OP (posed rev.) 3 WAR + DEN 5 S(NOWD)AY (down anag.) 6 E(CLIP)TIC (cite rev.) 7 DEN(YIN)G 8 2 defs. 9 hidden 16 2 defs. 17 pun 18 MIL(LION)S (slim rev.) 20 [l/S]-ATCHE-[s/L] 21 anag. 22 anag. 24 T + ELLA + LL 25 T(RUM)AN 26 MUS + I + C