The Great Australian Home-Run Spike, Part 1
This is Alexis Brudnicki’s third piece as part of her March residency at FanGraphs. Alexis is the Director of Baseball Information for the Great Lake Canadians, an elite amateur baseball program in London, Ontario, Canada. She has written for various publications including Baseball America, Canadian Baseball Network, Sportsnet, The Hardball Times, and Prep Baseball report. She won a 2016 SABR Analytics Conference Research Award for Contemporary Baseball Commentary. She can also be found on Twitter (@baseballexis). She’ll be contributing here this month.
Juiced or not juiced?
While the question has become a persistent topic of conversation in Major League Baseball of late, similar rumblings about the state of the baseball have begun to pick up steam across the world.
After the six teams in the Australian Baseball League combined for 171 home runs over 119 total regular-season games during the 2016-2017 season, those same squads hit 379 long balls in the same number of matchups during the most recent winter.
A comparison of the offensive stats of the 2016-17 season to the 2017-18 season highlights the shift:
Season | R/G | R | H | 2B | 3B | HR | K | OBP | SLG | OPS |
---|---|---|---|---|---|---|---|---|---|---|
2016/17 | 4.78 | 1138 | 2053 | 394 | 34 | 171 | 1746 | .339 | .388 | .727 |
2017/18 | 6.51 | 1550 | 2343 | 476 | 35 | 379 | 1999 | .361 | .495 | .856 |
And the pitching stats diverge similarly:
Season | ERA | R/9 | IP | R | ER | BB | WHIP | H/9 | HR/9 |
---|---|---|---|---|---|---|---|---|---|
2016-17 | 4.28 | 5.08 | 2016.1 | 1138 | 958 | 812 | 1.421 | 9.2 | 0.8 |
2017-18 | 5.93 | 6.97 | 2002.0 | 1550 | 1320 | 849 | 1.594 | 10.5 | 1.7 |
Power numbers went way up, offensive numbers increased in every statistical category across the league, and pitching stats were abysmal, with more runs scored per game than ever before. It was a significant enough difference to inspire the players and fans to speculate on the causes.
The obvious answer in Australia was that the equipment was different. Though there has been speculation about modifications to the baseballs in MLB, the Aussie league’s transition to a new equipment provider — moving from Rawlings balls and SAM BAT sticks to bats and balls from Brett Sports — removes any need to speculate.
Or does it?