Batter's Box Interactive Magazine: Fun Jay Stats

The BR game finder is free at the moment so I dug in a bit for silly Jay records.

27 times it has happened
First Jerry Garvin on 1977-05-25 (9 2/3 IP, 6 R 3 ER - crazy he was left in that long)
Last Roy Halladay on 2007-04-13 (10 IP 107 pitches, won 2-1)
Just 2 in the 2000's (both by Halladay), 1 in the 90's (Tom Candiotti), 18 in the 80's, 6 in the 70's.
Most: Dave Stieb 7 times, 3 each Dave Lemanczyk (2 starts in a row and one other time in 1977, all parts of double headers), Jim Clancy, Jimmy Key; 2 each for Roy Halladay, Jim Gott, Jesse Jefferson,
12 innings longest - twice, 1978-05-23 by Jefferson, 1980-05-17 by Stieb.

Pitches in a game (not available for most games before 1988, so missing those crazy games by Stieb)

149: Roger Clemens in a 4-2 loss (8 IP vs Oakland on 1998-05-13)
Just 6 games with 140+ pitches
3 by Clemens, 1 each by David Cone, Jimmy Key, and Jack Morris.
61 times in the130's - last by Brandon Morrow on 2010-08-08 (1-0 shutout)
120-129 happened 255 times, last by Marco Estrada on 2015-06-24 (2 120 pitch games that year, other by R.A. Dickey)
Shortest game was on 1995-08-21 by Edwin Hurtado - 124 pitches in just 5 IP. Roger Clemens also threw 128 in 5 IP on 1998-06-19.

Boy the game has changed for endurance eh?

Jose Nunez on 1987-07-04 came in the 2nd inning and pitched the rest of the game 6 2/3 IP K'ing 9 guys. Thought he'd become something great at the time.
47 times a reliever had 6+ K's in a game.
Most recent 6+ K relief games were last year - Trent Thornton on 2019-09-11 (5 IP), Jacob Waguespack on 2019-05-27 (4 IP 7 K's)
9 of them in the 2000's.
Most impressive: Steve Delabar in 2 IP K'd 6 (0 H 0 BB, 26 pitches 19 strikes - but faced 7 as someone reached base on a 3rd strike passed ball, extra out was grounder 1B-P)

For those curious and wanting to dig in (please post stuff here for fun) go to Baseball Reference.

Fun Jay Stats