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What do teams with great one-run game records do the next year?

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April 13, 2006

Four teams played over .600 ball in one-run games in 2005.  They were: the World Champion Chicago White Sox (35-19, .648), the Boston Red Sox (27-15, .643), the New York Yankees (27-16, .628) and the oddball of the group, the Arizona Diamondbacks (28-18, .609). The question is: can a team consistently play well in one-run games?
 
This topic has been researched in the past and it's been found that teams who do well one year in one-run games return back to earth the next year.  Let's take another look at this, but also dig a little deeper.
 
There were twelve teams who played better than .600 ball in one-run games during a season between 2002 and 2004.  Collectively they had a winning percentage of .644.  What happened the next year?  They dropped to a .511 winning percentage.  Yes, they came back to earth, coming nearly all the way back to break-even baseball.
 
But let's take a closer look.  Two things stand out.
 
1) Out of these twelve teams who played great in one-run games, nine of them won 90 or more games.  The next year?  Despite the drop in wininng percentage in one-run games, eight of the teams won 90 or more the next year as well.  These teams are good overall, not simply because they won the one-run games, by luck as some would suggest.
 
2) Here's the other factor -- the Ozzie Guillen factor.  Out of the twelve teams, only the 2004 White Sox improved their one-run game record in the next year.  The 2004 White Sox went 28-18 (.609) in one run games and they are the only team to improve the next year as they went 35-19 as World Champs in 2005.
 
Is it truly an Ozzie Guillen factor?  Can he get more out of his teams in these close games than other managers?  While it may simply be a statistical variance, it does make you wonder.
 
Here's the complete list of the twelve teams and their performance the following year:
 
 
Teams with records better than .600 in one-run games -- 2002-2004
 
One-Run Games        Next Year
Yr Tm W L Pct W L Pct
2003 SF 28 12 0.700 18 25 0.419
2002 Oakland 32 14 0.696 25 20 0.556
2002 LAD 33 15 0.688 16 20 0.444
2004 LAD 32 16 0.667 33 26 0.559
2002 Minnesota 29 16 0.644 22 20 0.524
2004 Oakland 33 19 0.635 26 24 0.520
2004 SD 25 15 0.625 29 20 0.592
2002 Atlanta 28 17 0.622 17 25 0.405
2003 Boston 26 16 0.619 16 18 0.471
2004 Atlanta 27 17 0.614 23 20 0.535
2003 ChC 27 17 0.614 19 30 0.388
2004 CWS 28 18 0.609 35 19 0.648
 


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