American League 2008 Hitting PER Analysis (through ALL games of 2008)

Rank Player Team Hitting PER Run Contribution Ave (RCA) Earned Base Ave (EBA) Total Earned Bases (EB) Batting Ave On Base Ave Slugging Percent
1 Alex Rodriguez NYY 91.95 0.297 0.624 375 0.302 0.378 0.573
2 Shin-Soo Choo CLE 91.32 0.329 0.597 222 0.309 0.389 0.549
3 Carlos Quentin CHW 91.08 0.291 0.621 347 0.288 0.372 0.571
4 Mark Teixeira LAA 90.82 0.300 0.672 156 0.358 0.439 0.632
5 Kevin Youkilis BOS 89.13 0.291 0.601 371 0.312 0.378 0.569
6 Milton Bradley TEX 88.96 0.266 0.626 318 0.321 0.426 0.563
7 J.D. Drew BOS 86.97 0.274 0.600 274 0.280 0.403 0.519
8 David Ortiz BOS 85.91 0.286 0.576 282 0.264 0.368 0.507
9 Manny Ramirez BOS 85.57 0.273 0.589 246 0.299 0.386 0.529
10 Josh Hamilton TEX 85.24 0.281 0.571 404 0.304 0.364 0.530
11 Mike Napoli LAA 84.60 0.254 0.629 175 0.273 0.362 0.586
12 Aubrey Huff BAL 84.56 0.261 0.585 387 0.304 0.357 0.552
13 Ian Kinsler TEX 83.78 0.272 0.567 339 0.319 0.368 0.517
14 Chris Davis TEX 83.49 0.282 0.574 183 0.285 0.329 0.549
15 Justin Morneau MIN 83.12 0.286 0.545 387 0.300 0.371 0.499
16 Miguel Cabrera DET 82.56 0.257 0.569 388 0.292 0.347 0.537
17 Jim Thome CHW 82.44 0.249 0.576 345 0.245 0.358 0.503
18 Jason Bay BOS 82.03 0.321 0.575 122 0.293 0.364 0.527
19 Evan Longoria TBR 81.85 0.249 0.572 291 0.272 0.335 0.531
20 Jermaine Dye CHW 81.52 0.247 0.568 366 0.292 0.338 0.541
21 Carlos Pena TBR 81.42 0.247 0.568 339 0.247 0.365 0.494
22 Nick Markakis BAL 81.19 0.249 0.563 401 0.306 0.404 0.491
23 Kelly Shoppach CLE 81.18 0.260 0.560 218 0.261 0.329 0.517
24 Vladimir Guerrero LAA 80.89 0.250 0.560 338 0.303 0.361 0.521
25 Jason Giambi NYY 80.59 0.243 0.564 308 0.247 0.348 0.502
26 Curtis Granderson DET 80.45 0.250 0.555 356 0.280 0.362 0.494
27 Grady Sizemore CLE 79.94 0.215 0.584 454 0.268 0.365 0.502
28 Bobby Abreu NYY 79.68 0.264 0.534 382 0.296 0.370 0.471
29 Dustin Pedroia BOS 79.30 0.258 0.535 392 0.326 0.369 0.493
30 Melvin Mora BAL 79.19 0.284 0.509 288 0.285 0.329 0.483
*Based on at least 100 plate appearances within league

PER Analysis of the All-Time Greatest Hitters in MLB History

PER Analysis of the All-Time Greatest Pitchers in MLB History

 

Revolutionary Baseball Performance Efficiency Rating
The Baseball Performance Efficiency Rating (PER) system evaluates hitter's and pitcher's performance relative to plate appearances and innings pitched respectively.

For Hitters, the concept of a Batting PER develops and measures a player's Run Contribution Average and Earned Base Average. Accordingly, I've developed the following concepts of Run Contribution Average, Total Earned Bases, and Earned Base Average to complement the Batting Efficiency Rating.

Run Contribution Average (RCA ) comprises Total Runs Scored plus Runs Batted In, less total Home Runs. This is all divided by Total Plate Appearances. An RCA of 0.250 or higher indicates a good run producer, while an average of at least 0.300 indicates a hitter is an efficient run producer.

The Earned Bases Average (EBA) comprises Total Earned Bases (Total Bases plus total Bases on Balls, and total Stolen Bases produced by the Hitter) divided by total plate appearances and total steal attempts. This is the single most important statistic of a hitter since it measures all facets of his performance: hits (measured by total bases), walks drawn, and stolen bases, and compares it against every time he is at the plate or attempts a steal. His overall baseball skills is therefore assessed, and a true measure of his greatness is established. An EBA of greater than .600 indicates a great batsman and base runner, while a .700 or higher EBA indicates a premier batsman and all-time great Hitter.

The concepts of Run Contribution Average and Earned Bases Average are then combined in a very intuitive formula (and
adjusted for total plate appearances) to determine his Batting Efficiency Rating. As such, this is the single best measure of a baseball player's overall hitting performance since it measures his average, power, speed and run production, all combined in one statistic.

 Interpreting the PER Baseball Score
A score of 100 or greater is considered an extraordinary performance (in the top 1 % of the entire league)
  A score between 90 and 100 is considered a superior performance (top 5%)
 A score between 80 and 90 is considered above-average performance
  A score of about 70 is an average performance within the league
  A score below 70 is below-average performance
  A score below 60 is considered a significant under-performer

Read more of the PER Hitting Analysis...

Read more of the PER Pitching analysis...