Eight Players Under Performing their xOBA
I’ve been developing expected stats that attempt to objectively measure the true batting skill for individual players, and I’ve done my best to describe them over the past few weeks. Today is more about application. I’ve taken all players with 100+ plate appearances and sorted them based upon their difference between wOBA and xOBA. Here are eight of the biggest xOBA under performers for the season to date:
name | team | G | PA | AB | xAVG | ΔAVG | xOBP | ΔOBP | xSLG | ΔSLG | xBABIP | ΔBABIP | xOBA | ΔOBA |
Kendrys Morales | KC | 45 | 182 | 166 | .258 | -.071 | .314 | -.067 | .509 | -.196 | .260 | -.052 | .347 | -.098 |
Trevor Plouffe | MIN | 29 | 120 | 115 | .281 | -.029 | .306 | -.031 | 0.487 | -.104 | .313 | -.030 | .326 | -.042 |
Brian Dozier | MIN | 41 | 175 | 155 | .237 | -.037 | .320 | -.033 | 0.413 | -.077 | .255 | -.038 | .321 | -.044 |
Cameron Rupp | PHI | 27 | 106 | 103 | .327 | -.045 | .350 | -.048 | .624 | -.187 | .390 | -.020 | .395 | -.076 |
Howie Kendrick | LAD | 39 | 137 | 128 | .297 | -.070 | .339 | -.069 | .424 | -.135 | .356 | -.087 | .325 | -.076 |
Adam Jones | BAL | 38 | 166 | 154 | .280 | -.053 | .333 | -.050 | .516 | -.152 | .302 | -.046 | .358 | -.073 |
Nick Markakis | ATL | 44 | 199 | 167 | .284 | -.050 | .388 | -.041 | .400 | -.077 | .330 | -.053 | .358 | -.054 |
Prince Fielder | TEX | 46 | 192 | 170 | .249 | -.055 | .320 | -.049 | .363 | -.081 | .297 | -.067 | .302 | -.054 |
Lower differences indicate a player has under performed their expected stat.
Alrighty, let me explain this chart a little. The xAVG, xOBP, xSLG, xBABIP, and xOBA are all stats I calculate based upon the velocity and launch angle of the batted balls. The Δ columns are the differences between the measured stat and the expected stat, for example AVG – xAVG = ΔAVG. The lower the number, the more the player has under performed their expected values.