AFL Instant Replay: 20% of Challenged Calls Overturned

20% of challenged plays were overturned in baseball's instant replay experiment during the week's slate of Arizona Fall League games televised on MLB Network. The same MiLB umpiring crew comprised of chief Tripp Gibson, Sean Barber, Jeff Gosney and Patt Hoberg was employed for the duration of the test games, played at Salt River Fields at Talking Stick and Scottsdale, Arizona.

Here is the breakdown of the instant replay test plays, challenges and their results:
Game 1: 4 Challenged / 4 Upheld: 3 Safe/Out at first base + 1 Catch/Trap in left field.
Game 2: 7 Challenged / 4 Upheld: 2 Safe/Out (Tag) + 3 Safe/Out (1B) + 2 Missed base appeal (2/3B).
Game 3: 0 Challenged (No plays were challenged during Thursday's Game 3 event).
Game 4: 1 Challenged / 1 Upheld: 1 Safe/Out (1B)
Game 5: 3 Challenged / 3 Upheld: 1 Safe/Out (2B), 1 Safe/Out (Tag at 2B) + 1 HBP/Foul Ball (HBP)
Totals: 15 C / 12 U: 8 Safe/Out (Force) + 3 Safe/Out (Tag) + 2 Base Touch + 1 Catch/Trap + 1 HBP/Foul

80% of challenged calls were upheld, consistent with data finding that around 20% of close calls are erroneous.

Comments on Instant Replay: Joe Garagiola Jr., Tony La Russa, Joe Torre