I had an hour to spend this afternoon with the new Lahman database (includes final 2005 statistics), and I've always wanted to see more attention paid to OBP against as a pitcher stat. For the very same reasons why OBP should be valued more than BA as an offensive stat, I've always wondered why a pitcher's OBP against (which I'll call oppOBP) isn't cited more as a pitching stat, instead of BAA. There isn't quite enough info in the database to define an exact oppOBP, so I used a proxy(*): oppOBP = (H + BB + HBP) / BFP where BFP is batters faced by pitcher. Next I aggregated oppOBP and OBP across all players that played for each team and each year into a single measure of team performance: the OBPDifferential: OPPDifferential = TeamOBP - TeamOppOBP What I like about this stat is that it allows us to "compare apples-to-apples", across time and across leagues. That is, the average AL team OBP should naturally be higher than the average NL team OBP, but the differential adjusts for the DH effect by assigning equal importance to team pitching and batting. For what it's worth, here are the best 25 teams in the past 36 years according to OBPDifferential:
Team Year OBPDifferential
SEA 2001 0.06502
NYA 1998 0.05754
BAL 1971 0.05718
LAN 1974 0.05490
BAL 1970 0.04989
NYA 2002 0.04953
ATL 1997 0.04911
BAL 1973 0.04841
BOS 2004 0.04660
NYA 2003 0.04659
LAN 1975 0.04652
ARI 2002 0.04636
HOU 1998 0.04602
CLE 1995 0.04593
CIN 1976 0.04536
PHI 1976 0.04393
ATL 1998 0.04384
CLE 1996 0.04327
OAK 2001 0.04287
NYN 1986 0.04237
NYA 1999 0.04189
BOS 2002 0.04160
SEA 2002 0.04125
BAL 1979 0.04098
NYA 1997 0.04082
Surprises (to me at least) - the relative dearth of NL teams. - 2002 D'backs and 1998 Astros (a big unit common denominator there). - no STL entries: top entry was the 2004 Cards at #30 - the '75 Reds (whom I've heard some people cite as one of the greatest of all time) would have been #26, the first team not shown above. Since 1970, out of a total of 936 team-years, the '72 Cubs placed the highest of any Cub team, at a depressing #122 on the list (0.2696 OBPDifferential). The next Cub entries: '70 Cubs, #183 '01 Cubs, #200 '71 Cubs #298 '84 Cubs #302 '04 Cubs #339 '77 Cubs #390 '89 Cubs #413 '78 Cubs #450 '98 Cubs #461 '05 Cubs #485, and finally (amazingly) the '03 Cubs #487. Comments, questions & criticisms welcome of course. (*) I think this measure misses errors: if a batter reaches on an error, the next one walks, and the pitcher gets the next 3 outs, the oppOBP stat for that pitcher in that inning would be .200 where it should be .250. Reached-on-errors isn't available in the Pitching table, so this oppOBP definition is the best I can do.