- 1 EON
24A The Hadean was the first one, ending about 4 billion years ago
43343 - 2 ESP
32D Disputed ability
35344 - 3 LET
28A Re-serve cause
33287 - 4 AMI
10D Friend in Montréal
29302 - 5 ACHE
67A Post-marathon feeling
28282 - 6 ENOS
4D Slaughter in baseball
26287 - 7 ARK
39A Genesis craft
24160 - 8 REP
37D Public regard, informally
23192 - 9 RBI
54A Slugger's stat
23190 - 10 TRIO
36A Rock's Cream, e.g.
21204 - 11 OAHU
57D Diamond Head's isle
18185 - 12 INA
38D "___ pig's eye!"
17178 - 13 STS
64D Some GPS lines: Abbr.
16191 - 14 THO
65D Albeit, briefly
16109 - 15 YEP
33D "Yer darn tootin'"
1587 - 16 NAPA
11D Big name in auto parts
13112 - 17 IBM
50A Watson's creator
13106 - 18 UMP
6D Whisk broom-wielding official, for short
1396 - 19 OMAR
15A ___ the Tentmaker
12252 - 20 NEATO
19D "Peachy!"
12127 - 21 TKOS
70A Fight stoppers, for short
1273 - 22 RHEA
62D Ostrich's cousin
11133 - 23 AGER
71A Ripening agent
10108 - 24 ICON
14A Worshiped one
9189 - 25 ACRES
45A Ranch units
971 - 26 OBESE
18D Needing a seat belt extender, say
8145 - 27 GAPE
53A Bewildered look
854 - 28 WOO
56A Try to win
782 - 29 ONEL
58D Scott Turow memoir
679 - 30 ESPYS
44D Cable sports awards
636 - 31 TVS
36D Some Samsungs
567 - 32 GEENA
34A Davis who portrayed a president
554 - 33 MEEK
21A Overly compliant
548 - 34 FACE
1A Body part first transplanted in 2010
546 - 35 FARM
7D Raise things
536 - 36 NRA
55A Depression-era agcy.
4262 - 37 NENA
25D "99 Luftballons" singer
430 - 38 LARAM
30D Former West Coast N.F.L.'er
420 - 39 AXL
22A Singer ___ Rose
338 - 40 PULSE
69A It may be checked in a checkup
330 - 41 KOA
31D Org. for R.V. owners
328 - 42 SNIPS
27D Uses shears
326 - 43 KCAR
40D '80s Chrysler offering
319 - 44 ENIAC
47D "Giant Brain" of 1946
259 - 45 ZAPS
26A Patio bug-killer sounds
235 - 46 INNING
50D One of nine for nine
216 - 47 ACCRUE
2D Build up
211 - 48 AUS
23A Innsbruck locale: Abbr.
149 - 49 ENZO
68A Automobile builder Ferrari
127 - 50 EARNED
61A Brought in
122 - 51 COHOST
3D Fox News's Gretchen Carlson or Steve Doocy
118 - 52 GOING
34D Part of an auctioneer's cry
117 - 53 VENICE
42A Grand Canal site
115 - 54 JELL
13D Take shape
114 - 55 FISCAL
1D Word before year or conservative
19 - 56 DRAX
12D "Moonraker" villain
13 - 57 MADFOR
52D Crazy about
13 - 58 RHETT
66A Butler who didn't give a damn
047 - 59 SICK
60D Green around the gills
030 - 60 OTIOSE
35A Indolent
023 - 61 WKRP
56D Les Nessman's station
022 - 62 HEPCAT
49D Jazz lover, in old slang
014 - 63 AMARE
16A Basketball's Stoudemire
012 - 64 PAPP
41A "Hair" producer Joseph
012 - 65 JACKPOT
9D Lottery lure
09 - 66 FRIEZE
8D Architectural decoration
08 - 67 BREEZE
51D Piece of cake
06 - 68 JANDJ
9A Band-Aid co.
06 - 69 GYPS
59A Cheats
05 - 70 HUFF
5A Peeved mood
05 - 71 RIBEYES
46D Some steaks
05 - 72 CIAGATE
43D The Plame affair, informally
04 - 73 HOLYOKE
5D Mount ___ (Seven Sisters college)
04 - 74 SKELETONKEY
29A Item on a superintendent's chain
04 - 75 SPANISHMAIN
48A Ripe territory for pirates, once
04 - 76 CROSBY
20A Hockey's Sid the Kid
02 - 77 KANSASCITYCHIEF
63A Losing player in the first Super Bowl
02 - 78 01