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RhodyYanksFan
03-02-05, 12:30 PM
I searched BP.com's glossary and couldn't find it so I'll ask here. What is ERA+ and how is it calculated? Thanks.

FormerlyKnownAsMHHL
03-02-05, 12:39 PM
A pitchers ERA, adjusted for ballpark, against the league average.

100 is average


http://www.baseball-reference.com/leaders/ERAplus_leagues.shtml

Serge
03-02-05, 03:10 PM
And the highest ERA+ was Tim Keefe in 1880 (294), but we say Pedro holds the record with an ERA+ of 285 in 2000.

http://www.baseball-reference.com/leaders/ERAplus_season.shtml

RhodyYanksFan
03-02-05, 03:13 PM
Thanks for the info.

ChewieTobbacca
03-02-05, 05:47 PM
ERA+ is calculated by taking the league average ERA adjusted for their park that year divided by the ERA of the pitcher x 100. So if leauge average ERA that year was 4.00 for that team and a pitcher had a 2.00 ERA, his ERA+ would be 4/2 x 100 = 200.

beaker23
03-12-05, 04:51 AM
And the highest ERA+ was Tim Keefe in 1880 (294), but we say Pedro holds the record with an ERA+ of 285 in 2000.

http://www.baseball-reference.com/leaders/ERAplus_season.shtml

Well, really now, Tim Keefe's was in barely enough innings to qualify for anything, during an era where fielder's had no gloves, a walk took 7 balls instead of 4, pitches were thrown underhanded from 45 feet, batters were compelled by gentleman's agreement to swing at every pitch they could possibly hit, batters would request a high or low pitch, and a myriad of other rules that make the game Keefe played entirely different from what one would actually call "Baseball". It wasn't until 1884 that overhand pitching was introduced, and it wasn't until 1893 that the mound (although there were no rules at the time about having a mound) was moved to 60'6". In any event, Pedro easily holds the ERA+ record for Baseball as we know it.

The Rookie
03-15-05, 02:51 PM
I'm sorry to ask a different question at the bottom of this thread, but I don't know why it won't allow me to post a new one.

Does anyone know where I could find out home many runs were scored on the average home run? Or how many solo homeruns, 2-run, 3-run, and grandslams there were and I could do the math? Thanks a lot.

Again, sorry about the placement of this post.