Comments on: Pitching turnarounds in 2011 This and that about baseball stats. Tue, 16 Jul 2013 17:01:55 +0000 hourly 1 By: Johnny Twisto Fri, 20 May 2011 15:48:42 +0000 I'm not sure how the ballpark adjustment works--for example if it takes into consideration only the player's home ballpark, or all the parks he pitched in that year, or what.

It's based on the multi-season park factor, which is based on how many runs scored in all of a team's home game games compared to how many runs scored in all of its road games over (I believe) a 5-season span.

It should be noted that it is *not* adjusted for the specific parks a pitcher pitched in, and this could definitely have some impact on a SP. It's probably not unusual for a SP to have, say, 18 starts at home and 14 on the road, and/or 3 starts in one road park and none in several others, so his "personal" park factor could differ from the team's, but ERA+ just applies a team factor.

By: Around the Internet! « Puckett's Pond | A Minnesota Twins Blog Fri, 20 May 2011 15:48:19 +0000 [...] their pitching in 2011, so I thought I’d direct your attention to this little blurb over at Baseball-Reference.  Not only is Andy giving praise to Nick Blackburn for turning in solid performances in 2011 [...]

By: John Q Fri, 20 May 2011 15:27:20 +0000 @2 John A,

LOL, good one.

I was kind of surprised to find that Burnett is 34 years old. I didn't realize he was that old. I was also kind of shocked to find that Burnett only had one season above (3) WAR, '02 Marlins. And his career high was 3.8 WAR in 2002.

Burnett has averaged about 2.6 WAR from '05-09 which is good but definitely not worth something like $16 million a year. How much is 1 win of WAR worth these days, something like $4 million so you could say that Burnett's probably worth something like $10-12 million each year.

The Yankees can overpay a guy like Burnett which most teams can't do. The Yankees can overpay a #3 starter like Burnett something like $25-30 million dollars over 5 years and not have it impact their payroll one bit.

Another luxury the Yankees have is they can give a #3 starter a $75 million 5 year contract.

The Yankees of 2013 are going to be interesting with all that money and age on that team.

Maholm was a bit of victim of the Pirates terrible defense in 2010.

By: DD Fri, 20 May 2011 13:43:29 +0000 Andy thanks for the explanation, that all makes sense. You do show the league average ERA on the below page.

It does show the league average ERA dropping the last two years, which proves that to have an ERA+ over 100, pitchers must generally have a lower ERA than in the past (adjusted for their ballpark of course). This, along with a supposed decrease in velocity, is why no one has given Kevin Millwood a big league job yet (I know he signed with Boston as a minor leaguer recently). If you're gonna give a team a lot of innings, your ERA better be well under 5 to have a positive impact anymore. The days of an acceptable #5 starter having that high an ERA are over for now.

By: Andy Fri, 20 May 2011 13:24:47 +0000 DD, no such number exists. ERA+ is calculated as follows:

Adjusted to the player’s ballpark(s).

So, it's a normalization of the player's ERA vs the league ERA, but then there is a ballpark adjustment. I'm not sure how the ballpark adjustment works--for example if it takes into consideration only the player's home ballpark, or all the parks he pitched in that year, or what. But the bottom line is that a pitcher in a hitter-friendly park could have a higher ERA than a pitcher in a pitcher-friendly park and yet both could have an ERA+ of exactly 100.

By: DD Fri, 20 May 2011 13:15:51 +0000 Andy - it's been mentioned a few places but I'm not sure if it's been noted here yet: Can you or someone else here who is a whiz with the indexes run a list of the past 20 years ERA+ equaling 100? Meaning, what ERA+ equals the adjusted league average? It looks like this year it is running well under 4 (around 3.80) which seems awful low. More support for this being "Year of the Pitcher II - Electric Boogaloo"?

By: John Fri, 20 May 2011 12:47:28 +0000 As a Red Sox fan, I'm enjoying Masterson's success. I loved the Victor Martinez trade, but I was still sad to see Justin go. I wanted to see him grow up in Boston. I'm glad he's having success in Cleveland this year, after a bumpy year-plus.

By: Djibouti Thu, 19 May 2011 22:19:50 +0000 Great turnarounds for these guys and they're still stuck with a combined 16-17 record. Someone get Paul Maholm some runs support!

By: Matt Thu, 19 May 2011 20:31:34 +0000 Hector Noesi was the first pitcher to pitch 4 innings of relief in his major league debut AND receive the win since 1986, according to Mark Simon of ESPN Stats and Info

By: Evan Thu, 19 May 2011 19:52:18 +0000 I think Bud Norris was on the list prior to his 5ER in 5IP against St. Louis last night. His ERA went from 3.42 to 3.93 making his ERA+ 93. I don't know what his ERA+ was prior to the start, but I think it was over 100.

Also, this list reminds me that when I looked at Milton Bradley's contract the other week when Seattle DFA'd him I noticed that one of his contracts called for a bonus if he won the Comeback Player of the Year Award. Not exactly the type of bonus clause you want to have to put in a contract.