- Dumb Luck Wins
- Tough Luck Losses
- Out Prevention Percentage
- Infield Outs Prevented
Below you’ll find links to a variety of leaderboards for Infield Outs Prevented (IFOP) and Infield Outs per 100 Balls In Play (IFO/C). All the raw data for these leaderboards comes from Baseball-Reference.com
All leaderboards go back to only 2003. The location-specific batted ball data technically goes back to 1988, but there are irregularities in the data in 1998, 2000-2002, and a few other years. So, for now, I’ve only got reliable data for the past few seasons.
Individual Player Leaderboards
- OPP for All MLB: By Season
Any ideas for other leaderboards? Leave them in the comments.
If you are curious about a player or team’s IFOP, you can find all the information you need using Baseball-Reference’s Event Finder (in the Play Index). Just search for hits, reaches on error, and all outs (checking the double-play box), then click on the red text for each of the six infield positions to restrict the results to the infield. If you don’t have a Play Index subscription, you can also find these numbers in a player’s Batting Splits page.
Here’s the simple formula for calculating IFOP:
IFOP = IFH + IFROE – IFDP
IFH = infield hits
IFROE = times reaching on infield errors or fielder’s choices in which no out is recorded
IFDP = times hitting into double plays on the infield (non-ground ball double plays included)
IFOP values vary from year to year, but in 2010, +5 was league average for qualified batters. Ichiro led the league (by far) at +69; Derrek Lee and Billy Butler tied for worst at -15.
If you want to calculate IFO/C, you’ll also need the total number of balls a player hit on the infield (IFBIP). This can be found with the event finder or in a player’s Batting Splits page–just use At-Bats plus Sacrifice Flies (on the infield only of course). IFO/C can then be calculated as follows:
IFO/C = 100 – (100 * IFOP / IFBIP)
IFOP = infield outs prevented (defined above)
IFBIP = infield balls in play (total number of balls hit on the infield)
In 2010, the league average IFO/C was 96. The best qualified rate was Ichiro’s 80.1 and the worst was Derrek Lee’s 109.3.
This blog is devoted to the invention and use of unusual baseball statistics. These Junk Stats are designed to reveal the not-so-meaningful quirks that make baseball so fascinating.
JunkStats is written by Jacob Peterson, who also writes for the Braves blog Talking ChopBeyond the Boxscore
For more about the site or the author, read the About page
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