December 10, 2010
by redsoxtalk
Alright, I’ll admit that the first projection I put up was a little too conservative. It’s because I was using a flat adjustment for the NL to AL transition. Works well for average players, doesn’t work so well for superstar players. I’ve adjusted my methodology to a component-correlated one, and used it as a basis to regress towards 50%. Using this new method, here’s what I get for Gonzalez in Fenway:
| Age |
AB |
H |
2B |
3B |
HR |
R |
RBI |
BB |
SO |
SB |
Avg |
OBP |
SLG |
OPS |
wOBA |
wRAA |
| 29 |
606 |
175 |
39 |
1 |
30 |
98 |
105 |
81 |
121 |
2 |
0.289 |
0.378 |
0.505 |
0.883 |
0.392 |
46.2 |
| 30 |
615 |
176 |
38 |
1 |
30 |
98 |
106 |
80 |
122 |
2 |
0.287 |
0.375 |
0.501 |
0.876 |
0.389 |
44.6 |
| 31 |
617 |
175 |
37 |
1 |
30 |
97 |
106 |
78 |
121 |
2 |
0.284 |
0.370 |
0.495 |
0.864 |
0.384 |
41.2 |
| 32 |
612 |
172 |
35 |
1 |
29 |
95 |
103 |
74 |
118 |
2 |
0.281 |
0.363 |
0.485 |
0.848 |
0.377 |
36.0 |
| 33 |
600 |
166 |
33 |
1 |
28 |
91 |
99 |
68 |
114 |
2 |
0.276 |
0.355 |
0.473 |
0.828 |
0.369 |
29.5 |
| 34 |
580 |
157 |
30 |
1 |
25 |
85 |
93 |
61 |
109 |
2 |
0.271 |
0.346 |
0.459 |
0.805 |
0.359 |
21.9 |
| 35 |
552 |
147 |
27 |
1 |
23 |
78 |
85 |
53 |
103 |
1 |
0.266 |
0.335 |
0.443 |
0.778 |
0.347 |
13.7 |
| 36 |
517 |
134 |
24 |
1 |
20 |
71 |
76 |
45 |
95 |
1 |
0.259 |
0.323 |
0.425 |
0.748 |
0.335 |
5.5 |
I feel much better about this projection. One interesting thing I found was that even top sluggers who go from the NL to the AL lose a lot in terms of home run rate, and vice versa, for whatever reason. There’s a big difference once you change leagues, whether you’re Manny Ramirez or Matt Holliday or Mark Teixeira. That’s reflected here in Gonzalez losing 5 HR compared to his NL projection. I hope Adrian bucks that trend and hits 40, but it looks like the over/under number for 2011 is about 30.