Showing posts with label 2008 MLB Preview. Show all posts
Showing posts with label 2008 MLB Preview. Show all posts

Monday, March 31, 2008

Somebody's Gonna Be Wrong

Comparing preseason predictions from various sources is a lot of fun, and also a pretty good way to get a feel for what's expected from teams from various sections of the media. What I've done here is take predictions from a few different places- 5 ESPN analysts in their season preview, three Yahoo! guys, the SI staff, Joe Sheehan (AL, NL), and PECOTA- and find the biggest discrepancies bewteen win totals for each team. The first largest differences are below, followed by a discussion of why there's such a lack of consensus, and who looks to be correct.

By coincidence, this ended up being all AL teams, which is fine by me.

Seattle Mariners
Average: 86.2
High: Steve Phillips (ESPN), 92
Low: PECOTA, 75

Do you think Phillips can spell "Pythagorean"? I don't.

That being said, 75 is really low. The PECOTA projection does come with something of a disclaimer, since it has Ichiro hitting .303/.346/.384. In 4774 career ABs, Suzuki has hit .333/.379/.437; this is his age 34 season, but thats a huge drop, and Ichiro has outperformed his PECOTA pretty much every year.

Still, even if we bump PECOTA's projection up to 77, that's a 15 win difference. And this is far from an isolated incident. The four ESPN guys (Stark, Kurkjian, Olney, and Phillips) and the three Yahoo! guys (Henson, Brown, and Passan) have the winning an average of 90 games. Sheehan, Law, and various computer projections predict an average of 79 victories.

They won 88 games last year, while being outscored by 19 runs. The high predictions employ the "88 wins + Bedard" logic. The others are starting with a baseline of 79, and giving them a boost for Bedard but factoring in some regression for their aging lineup. I don't think it's particularly hard to figure out who to side with here.

Tampa Bay Rays
Average: 77.3
High: PECOTA, 88
Low: Steve Henson (Yahoo!), 72

The thing you have to love about PECOTA is that it's 100% unbiased. When it runs the numbers and comes up with 88 wins for a team that's never won 70, it doesn't adjust that to something that seems a little more reasonable. This paid off with the White Sox prediction last year; considering its history of success (not limited to that one example, obviously), the extreme predictions for Seattle and Tampa are hard to ignore.

I don't really know who this Steve Henson fellow is, but that's okay- he's got some wacky predictions, which are always appreciated. Here is his analysis on the Rays:
"The Rays are improving but are still middle-school level to the Red Sox graduate students."
This is a little over the top, but I think that's the mainstream consensus. Personally, I have no idea how many games this team is going to win (although I'd certainly take the over on 72). There's no big Pythag gap here- last year their expected record was 67-95, and their actual record was 66-96. Three things are causing the huge expected jump- a vastly improved defense, additions to the bullpen, and the development of young players. They were a horrible fielding team last year, but PECOTA expects them to be a little above average this season. The biggest upgrade is going from Brendan Harris (-19 in Dewan's system) embarrassing himself at short to Jason Barlett's +18 glove. The also have Upton finally spending a full year in center, and the (eventual) addition of Longoria to the lineup will allow Iwamura to slide over to second.

Combine that with the addition of Matt Garza, and the progress of Kazmir, Shields, Sonnanstine and Co., and it's easy to see that their run prevention will be much improved. PECOTA has a team that allowed 944 runs last year decreasing that by a whopping 226 runs. Without looking it up, I'm going to go ahead and assume that that'd be the largest reduction in the history of baseball; that's about three months worth of runs for the Giants' offense.

Henson's prediction of 72 wins for the Rays is insanely low; 88 is high, but not that high. It's hard to both see and quantify these internal improvements- switching up defensive alignments, young players improving, old ones regressing- which is why PECOTA is so far off from the general consensus.

Texas Rangers
Average: 73.0
High: Joe Sheehan (Baseball Prospectus), 80
Low: Steve Phillips, 64

This is not a fair fight.

I watched Phillips' "analysis" of the Rangers
on their ESPN season preview page, and I must say, he didn't really enlighten me. He doesn't think Millwood and Padilla are top of the rotation starters, which is reasonable. He goes on to explain that Texas is going to have to outslug their opponents. I don't know how he came to that 64 number (he probably doesn't either), but we should remember that they do get to play almost 60 games against that increasingly horrific division.

Sheehan is bullish on their offense; he has Texas scoring 840 runs, which is 60 higher than PECOTA. He seems to be high on Blalock who absolutely tore it up (.313/.405/.656) after returning after missing three months last year. Because of his disappointing '05 and '06 campaigns, PECOTA is very down on Blalock with a projected .263/.331/.436 line, so that's probably causing a decent amount of a difference. Because of how unique he is, Josh Hamilton is obviously a hard guy to find comparisons for; PECOTA has him going from .292/.368/.554 last season to .283/.349/.481 this year. This makes some sense, since last year was in the easier league and a better hitters park, but it still seems low. In writing this paragraph, I have convinced myself that the Rangers are going to score a whole lot of runs this season, and certainly win a lot more than 64 games.

Baltimore Orioles

Average: 63.6
High: Steve Henson, 70
Low: Buster Olney (ESPN), 56

Olney does love the extreme predictions- 49 wins for the Nationals last year is one I'll never forget. This one is much more sane though. They have a decent outfield, but they forgot about the whole "shortstop" thing, and that is a truly awful rotation in an impossible division.
Our new friend Henson thinks they will win just two less games than the Rays; now that is a bet I'd like to make.

Toronto Blue Jays

Average: 86.2
High: Joe Sheehan, 91
Low: PECOTA, 78

This is very interesting- a third huge discrepancy in the East, but this time between two "people" that look at things similarly. These are the only two sets of projections that also offer RS/RA, which is helpful. PECOTA has Toronto at 762/775, while Sheehan predicts 761/676. So it's pretty clear where the disagreement is here.

This may be partially caused by different opinions on their defense- they are good, it's just a question of how good. But I think it's mostly their top 3 starters. Burnett can opt out of his deal at the end of the year (thanks, Keith). PECOTA has him throwing 185 innings with a 3.83 ERA; it's worth noting that in his last contract year he threw 209 innings with a 3.44 ERA in 2005, his last contract year. That's certainly too optimistic of an expectation, but it's been shown that players perform better in contract years, and I don't believe PECOTA takes that into account. So that's something to keep in mind. Staying healthy is the first step, obviously.

PECOTA has Halladay at a 4.06 ERA, which is certainly conservative, as his career ERA is 3.63- I'm assuming that's caused by his relatively weak peripherals.

Finally, PECOTA is very low in McGowan, with a 4.60 ERA. Obviously, it hasn't been reading The Baseball Analysts. Beyond that intriguing article, I've read a few other things on McGowan. I think he's expected to improve on last year's 4.08 ERA, and certainly beat his PECOTA projection. So yeah, it looks like Toronto will have some excellent run prevention this year, as one can reasonably expect their top three starters to be significantly better than what PECOTA suggests.

Sunday, February 17, 2008

2008 MLB Wins Over/Unders

Update 2: Join the contest.

Update
: BetUS has now posted totals as well.

BetCRIS, which is now my favorite website, has posted over/unders for each MLB team's 2008 wins. Vegas Watch will have much more coverage of this in the coming weeks (to the extent that I ever *cover* anything). For now, I will just post the totals, although I did have some fun with the formats.

Arizona- 86.5
Atlanta- 86
Baltimore- 65
Boston- 94
Chicago C- 87.5
Chicago W- 76
Cincinnati- 76.5
Cleveland- 91
Colorado- 83

Detroit- 93.5
Florida- 68.5
Houston- 73.5
Kansas City- 73.5
LA Angels- 92
LA Dodgers- 87.5
Milwaukee- 84
Minnesota- 73.5
NY Mets- 92.5
NY Yankees- 94

Oakland- 74
Philadelphia- 88
Pittsburgh- 68.5
San Diego- 85
San Francisco- 72

Seattle- 85

St. Louis- 77
Tampa Bay- 72

Texas- 75
Toronto- 84
Washington- 71.5

Edit: New poll is up. Let's see how many of these things we can get through before the season starts.

Saturday, February 16, 2008

Crazy Computer Hates Mariners

The 2007 Seattle Mariners won 88 games, finishing second in the AL West. In the offseason they added Erik Bedard and Carlos Silva to a rotation that saw Jeff Weaver, Horacio Ramirez, Cha Seung Baek, and Ryan Feierabend combine to make 68 starts last year while compiling a 6.49 ERA.

They did lose a few guys from last year's team, including Jose Guillen (signed with Royals), Ben Broussard (traded to Rangers), Jeff Weaver (unsigned), and George Sherill (Bedard trade). But the additions to the rotation clearlymake up for these losses. In other words, Steve Phillips will likely predict that the Mariners win 90 games.

Baseball Prospectus' projection system, PECOTA, has them winning 73 games.

The issue is not their pitching, which PECOTA has as a little better than league average. The problem is they are projected to score 691 runs, which is the lowest number in the AL.

How does an 88-win team seemingly improve, yet become a 73-win team? A few possibilities:

Pythagorean Record
This is the obvious one. Seattle was outscore by 19 runs last year, and their third-order record was just 78- 84. If you are setting the baseline on the 2008 team at 88, you are wildly overestimating their true talent level.

Ichiro
PECOTA has Ichiro hitting .304/.346/.384, for a VORP of just 14.7. This is a guy with a career line of .333/.379/.437, whose average VORP over the last three years has been 48.1. PECOTA is consistently down on Ichiro (last year it had him at .310/.353/.400; he hit .351/.396/.431), so you have to think they are being unfairly docked a few wins here.

Age
The average age of the 30 MLB teams last year was about 28. Weighted for playing time (from here), the average age of the 2008 Mariners' lineup is 30.3, with Ichiro, Ibanez, Sexson, Vidro Johjima, and Wilkerson all on the wrong side of 30. This is another thing that goes unnoticed by he mainstream media. There is a significant difference between going from 28 to 29, and 30 to 31, and I think that is part of the reason their projection is as low as it is.

Defense
Seattle was 27th in the majors last year with a defensive efficiency of .678. This also goes back to their age- it is likely that they will be just as bad, if not worse, this year, as everybody is a year older, and they traded away a very strong defender in Jones.

73 wins seems a little extreme, but I think a projection of around 76 is entirely reasonable. Either way, articles like this are sure to be written, but we'll have to wait and see if there's a post like this come September.