A team that has dramatically improved it's defense is more likely to findpitching breakouts than the other way around. For those of you unfamiliar with UZR I've borrowed a description from Baseball Think Factory (this link is a good one to read) :
UZR rate is expressed as a fraction of 1, the same as a simple ZR (ZR). A UZR rate means essentially the same thing as a simple ZR � namely the number of balls fielded (turned into at least one out) divided by the number of chances; however, UZR rate is a weighted average of a player�s ZR in each of several zones.
As you will see, UZR rate is really a by-product of UZR runs, and UZR runs is the heart of the UZR system. It represents the value of a fielder�s performance expressed as runs saved or cost, in comparison to an average fielder (actually in comparison to the mean performance of all fielders) at that position, in that player�s league, and during that particular year. UZR runs is the defensive counterpart of Palmer�s offensive linear weights (lwts); thus it can be combined with lwts (among other things) to give you an estimate of a player�s total offensive and defensive value. Any player with an average defensive performance will, by definition, have exactly zero UZR runs.
Team | G | E | DP | FP | UZR |
Rays | 2080 | 90 | 429 | 0.985 | 70.6 |
Phillies | 2181 | 90 | 380 | 0.985 | 48.5 |
Red Sox | 2146 | 85 | 399 | 0.986 | 44.3 |
Athletics | 2126 | 98 | 467 | 0.984 | 31.5 |
Astros | 2125 | 67 | 379 | 0.989 | 30.8 |
Cardinals | 2297 | 85 | 430 | 0.986 | 30.4 |
Nationals | 2160 | 123 | 387 | 0.98 | 29.1 |
Brewers | 2002 | 101 | 425 | 0.984 | 21.7 |
Giants | 2216 | 96 | 341 | 0.984 | 21.3 |
Royals | 2124 | 96 | 431 | 0.984 | 19.2 |
Blue Jays | 2042 | 84 | 366 | 0.986 | 19 |
Mets | 2194 | 83 | 344 | 0.986 | 14.8 |
Cubs | 2180 | 99 | 311 | 0.983 | 9.8 |
Indians | 2010 | 94 | 498 | 0.985 | 6.2 |
Marlins | 2221 | 117 | 328 | 0.98 | 0.8 |
Angels | 2030 | 91 | 441 | 0.985 | -0.5 |
Braves | 2161 | 107 | 404 | 0.983 | -0.8 |
Orioles | 2126 | 100 | 441 | 0.983 | -2 |
Padres | 2097 | 85 | 401 | 0.986 | -14.5 |
Pirates | 2092 | 107 | 504 | 0.983 | -17.8 |
White Sox | 2134 | 108 | 427 | 0.983 | -18 |
Twins | 2078 | 108 | 465 | 0.983 | -25.5 |
Diamondbacks | 2073 | 113 | 374 | 0.981 | -25.8 |
Mariners | 2075 | 99 | 430 | 0.984 | -32.8 |
Dodgers | 2205 | 101 | 376 | 0.984 | -35.8 |
Rangers | 2107 | 132 | 528 | 0.979 | -35.8 |
Tigers | 2122 | 113 | 466 | 0.981 | -38 |
Yankees | 2143 | 83 | 366 | 0.986 | -39.4 |
Reds | 2204 | 114 | 414 | 0.981 | -41.7 |
Rockies | 2122 | 96 | 466 | 0.985 | -70.9 |