|What does the history of "meh" teams that have a late-season hot streak|
tell us about the eventual fate of the Los Angeles Dodgers in '12??
There was a more specific genesis for this question that should be plopped on the table at this point. The poser (and I don't mean that in a pejorative sense: let's just the "questioning one") wanted to know if teams that finished strong but still had a mediocre overall won-loss record in Season 0 would trend toward better performance in Season +1. Specifically, the 2011 Dodgers, who were only 82-79 for the season but won 25 of their last 35 games.
So we picked through the data at Forman et fils that permits us to look at streaks, located the 200 teams with the best performance over their last 35 games, and winnowed down the list to include only those teams who played at least .686 ball (or 24-11) in that time frame. As you might expect, the vast majority of the teams on that "top 200" list posted season records that were much, much better than "meh" (the favored diminutive for mediocre). More than 85% of the teams on the list were purged because they were too good.
So that leaves us with a total of 27 teams that were "meh" overall in the year in which they finished strongly. (And even here we stretched a little bit, putting teams on the list that were 20 games over .500).
The 2011 Dodgers, of course, made the list. The jury will be out for quite some time with respect to 2012, so that leaves us 26 teams with Year 0 and Year +1 data. So what are the results?
We've put the post-expansion teams in bold italics. Those thirteen teams have performed a good bit worse than the average, winning nearly four fewer games in Season +1. If we pull out the '92 Brewers, however, that cuts this in half.
No matter how you slice it, we just aren't seeing much of a carryover trend for these kind of teams. They are all over the map when it comes to the "afteryear." At the top of the improvement list we have three pennant winners--the 1919 Reds, 1951 Giants, and 1979 Pirates. There are two other pennant winners on the list: the 1920 Yankees and the 1945 Tigers, but it's dicey to include that last team for two reasons: first, we're talking about the tail end of the war years; second, they only improved by a half-game and are one of the teams who were a bit too good in Season 0 that to be on the list in the first place.
So, the range of expectation that the Dodgers could improve markedly (meaning seven or more wins in Season +1) is about one in four.
[POSTSCRIPT: The Dodgers pulled out a 9-8 win on Friday the 13th against the Padres, raising their early-season record to 7-1. When we look at NL teams that started 7-1 since 1901, and set aside the four squads that did this in strike-affected years (1981, 1994, 1995), we find that 18 of those 49 teams went on to the postseason, just under 37%. The average W-L record for the post-expansion NL teams who've started the year 7-1 is 89-72. Only six of these 49 teams have wound up the year with sub-.500 records.]