Showing posts with label UZR. Show all posts
Showing posts with label UZR. Show all posts

Saturday, January 30, 2010

Primer: Advanced Stats

If you're like me, you're a handsome devil. But you're also occasionally overwhelmed by the plethora of advanced statistics that have cropped up recently, with new formulas seemingly being created every season. But fear not, because the gurusphere has got you covered. The good folk at True Blue LA and Big League Stew have put together a series of explanatory posts for Joe Blogfans like us.

True Blue LA

Big League Stew

Thursday, July 23, 2009

UZR Friendly

Ben Reiter at SI.com uses the Ultimate Zone Rating stat to show the Dodgers are among six teams projected to improve their records by at least ten wins due to improved defense:

A back injury limited shortstop Rafael Furcal to 35 starts last year, forcing the Dodgers to replace him with a series of subpar or inexperienced defenders that included Angel Berroa, Nomar Garciaparra, Chin-lung Hu and Luis Maza. Furcal, whom the Dodgers re-signed as a free agent over the winter, has stayed healthy this season, and despite his uncharacteristic offensive woes (he's hitting .251) ranks as the sixth-best defensive shortstop in the majors, according to UZR.

Eight Dodgers received starts at second base in '08, but 40-year-old Jeff Kent got the vast majority of those (114), and he finished the season with the worst UZR (-11.8) of any second baseman in baseball. [...] Free-agent signing Orlando Hudson, a three-time Gold Glover, has solidified the position.

The Dodgers, however, have perhaps benefited most from the defensive development of 24-year-old Matt Kemp, who has in one season advanced from an average center fielder (1.3 UZR in '08) to an outstanding one; his current UZR of 11.3 ranks him behind only the Mariners' Franklin Gutierrez and Cardinals rookie Colby Rasmus.

Reiter also supplies these numbers for the Dodgers:

2008 UZR 2009 UZR (Proj.) Diff. '08 Wins '09 Wins (Proj.) Diff.
-48.0 0.4 48.4 84 103 19

While offensive displays like last night's heroics are sexier in the box score, Reiter's article is a fine reminder that the Dodgers are employing a balanced attack this season. Offensively, the Dodgers are 11th in home runs and third in runs scored in the NL. It's their improved defense that is helping to separate them from the powerhouse offensive teams.

Better D has indirect benefits as well. "Helps us as pitchers know that we don't have to strike everybody out, you can just let them put the ball in play, and if it's a catchable ball it's going to be caught," Clayton Kershaw is quoted as saying. (Think Derek Lowe could have used some of that last year? With the majors' third-worst UZR defense behind him this year, Lowe is still 9-7.)

Strangely, as has been noted in many an SoSG Game Thread, UZR "hates" some of the Dodgers' more dependable gloves: James Loney is at -0.9, Hudson at -4.2 and Andre Ethier at a whopping -14.4. But it should be noted that Juan Pierre in left field is at 6.5.

Although the numbers may not correlate with the anecdotal evidence, it's comforting to know this year's Dodgers are anything but a one-note team. This diversity has been key in the team's much-lauded feat of avoiding a three-game losing streak. In other words, leather and wood match quite nicely, thank you very much.

Thursday, June 25, 2009

Collins & Lyons Like Oscar & Felix

Eric Collins and Steve Lyons, from last night's telecast:

Collins: I was talking last inning about Gordon Beckham and his OPS. OPS, some people just kind of gloss over that. But it is fairly indicative of a quality player. You look in the history of baseball, you look at the on-base percentage plus slugging percentage, and without fail, the top ten players are all the elite of the elite in the history of major league baseball.

And I know it's college baseball, but Gordon Beckham last year as a college player, middle infield, shortstop, an OPS of 1.323. He had an on-base percentage of over five hundred percent. Five hundred! Slugging percentage over eight hundred.

To put that in perspective, Albert Pujols is off to a great start this year. Just a great start with St. Louis. His OPS right now is 1.159. Two hundred percentage points lower than what Gordon Beckham did last year as a collegian.

Lyons: See, that's why I gloss over it, because I don't know what 1.300 means. It's a number.

Collins: Anything over a thousand is, you're an elite player. Currently in Major League Baseball, Albert Pujols leads the way. He's at 1.159.

Ben Zobrist, I don't know if people have even thought about this. The guy in Tampa Bay, he's playing second base right now — as James Loney gets himself a knock — Ben Zobrist is second, a little over a thousand. Kevin Youkilis, up there. Another over a thousand would be Raul Ibanez.

Collins: "You can't fudge slugging percentage and you can't fudge on-base percentage."

Lyons: There's a player. But without going through the gyrations of OPS and the 1.300s, can't you just look at Raul Ibanez, your boy Zobrist, and just say, "Those guys are pretty good players."

Collins: Yeah, but there's some holes in some numbers. You look at batting average, guy's hitting .315, but it's a hollow .315. This tells you if a guy's hitting something, it's legit. You can't fudge slugging percentage and you can't fudge on-base percentage.

Lyons: Do you follow some of the other whacked-out statistical categories that are nouveau to the game of baseball?

Collins: I do. It's —

Lyons: What are they?

Collins: Well, you got defensive — for the first time ever you have —

Lyons: The WHIP —

Collins: For the first time ever you have categories that measure defense. The UZR: Ultimate Zone Rating. It makes a difference. Everyone talked about it last year. Tampa Bay making it to the post-season because of pitching and defense. Defense matters nowadays.

Lyons: It's fictional.

Lyons: "Is he a gamer? Does he get dirty? Does he go out there and play hard? Is he a good teammate? None of that stuff tells me any of that."

Collins: I'm telling you, we're going to be head-to-head on this all season long. There is a place —

Lyons: There is a place, a very small place, for the computer geeks that are now taking over the game of baseball. There is a place, but it's a small place. We're seeing way too much of it.

Collins: Now I'm going to fight that battle.

Lyons: None of those numbers — that UZR-mum thing that rates defense —

Collins: UZR. Ultimate Zone Rating.

Lyons: UZR. And your WHIPs and your OPSes. They don't show me what kind of heart the guy has. BABIP?

Collins: Batting Average on Balls in Play?

Lyons: Stupid. Doesn't tell me if the guy is a player. Doesn't tell me if the guy can play. Is he a gamer? Does he get dirty? Does he go out there and play hard? Is he a good teammate? None of that stuff tells me any of that. That's the guy I want.

Collins: That would be your Derek Jeter, we were talking about an inning ago.

Lyons: I'll take your computer and I'll toss it right off this balcony here.

Collins: "If you put yourself in the best possible situation through percentages, theoretically you have a better chance of winning games."

Collins: Every computer ever designed would have told you that Alex Rodriguez was a better defender than Derek Jeter when he first came to the Yankees, yet Derek Jeter continued to play shortstop. And that didn't help the Yankees at all defensively.

Three-one pitch.

But Derek Jeter is a gamer and he's —

Lyons: I'll let you take that up with Joe Torre.

Collins: I bet he'd have an interesting thought on that. Maybe that'll be my task for tomorrow.

Lyons: I hope you still have a job after that conversation.

Collins: I'll ask nicely.

Three balls and two strikes to Russell Martin. There are Dodgers on in front of him. This ball is hit fairly well to center field, but they've got a man there. Brian Anderson makes the play. Two outs here in the eighth.

Lyons: Now I will give you that in the game of baseball, down through time and part of the great history in the game of baseball, is based on its numbers. No question about that, there's no getting around it, there's no getting away from it. I'm kind of the traditional number guy.

Lyons: "The problem with computer rankings is they're trying to put a logical spin on a game of baseball that just isn't all that logical."

Collins: But batting average means nothing.

Lyons: Show me an average. Show me — it means something —

Collins: Runs batted in means nothing. You could be leading your team in runs batted in, but if you're hitting, whatever, .195 when you're doing it, you're just getting more opportunities than other people.

Lyons: Yes, but that's a different way of thinking about the game. You're hopefully getting more opportunities because you're put in the spot in the lineup where those opportunities will fall in your lap. And that's why your manager is hitting you there.

The problem with computer rankings and all this stuff is they're trying to put a logical spin on a game of baseball that just isn't all that logical. You're saying the guy's getting more opportunities to drive in runs. Well, is that his fault? It's just the way the game gets played.

Collins: Baseball, you mentioned it before, it's a numbers game. It's a game of percentages. And if you put yourself in the best possible situation through percentages, theoretically you have a better chance of winning games.

Ozzie Guillen is with you. You guys are teammates to the core. He is a feel-guy, a gut-guy, and I don't think he looks at too many of the things that the seamheads toss his way.

Lyons: What?

Collins: We call ourselves "seamheads."

Lyons: "Seamheads"?

Collins: Yeah.

Lyons: I thought you said "sea-meds."

Collins: This ball, crunched to left field! Podsednik looking up, it's gone! Dodgers are right back in it, a three-run shot from Matt Kemp! There's life in the boys from Los Angeles yet. Oh-two pitch hammered deep into the night, home run number nine.

Lyons: We're going to take a good look at Matt Kemp's swing from the side. There's just not a whole lot of effort there. He just drops the head on there, as soon as he's coming out of the batter's box. I almost think that maybe he thought he didn't get enough of it to get it out of here, but he sure did. Now there's a classic example of, he's a big strong guy, no question. But he just put a nice easy swing on a ball that was up in the zone and that thing jumped.

Why don't you recalculate his OPS now?

Thursday, April 09, 2009

It Must Be the...Contact Lenses?

Spring training is always filled with stories about players who have added muscle, or shed fat, or become more flexible, or reworked their delivery, or started using new equipment...so we barely batted an eyelash when the LA Times reported on Matt Kemp's new contact lenses:

Matt Kemp said he didn't know if his eyesight was responsible for his franchise-record 153 strikeouts last season.

But he said he saw the seams of the baseball more clearly in the Dodgers' 8-6 victory over the Colorado Rockies on Thursday than he did last year or in any game this spring because of the new contact lenses he received this week.

"It made it way, way clearer," Kemp said. "It's better. I feel really good at the plate."

Kemp must be feeling really good in the field, too, if his defensive performance in the Dodgers' first three games is any indication. In addition to his Game 1 heroics, Kemp appears to be getting better jumps and/or taking better routes in tracking balls hit to center field. He's made at least one nice shoe-top grab and has easily run down several hard-hit balls that might have tied him up last year. Kemp's 2008 center-field UZR* was a mere (but still positive) 1.3. While it's too early to project his 2009 numbers, it's safe to say things are looking up for Matt Kemp.

*UZR = Ultimate Zone Rating, "considered by many to be the most comprehensive defensive metric out there" (read more about it at ESPN.com and SI.com—thanks to Kensai for the links)