Lots of Mets and Yankees fans are grabbing their crotches as to what the excitement of a new stadium could do to the season, as if the excitement and joy of a new home could spill over and propel their team to greatness. Yada yada. Going back twenty years, here is how teams have fared in their first season in a new park:

1989 Blue Jays - Rogers Centre (SkyDome) - 89-73 : Lost ALCS
1991 White Sox - U.S. Cellular Field (Comiskey Park) - 87-75
1992 Orioles - Oriole Park at Camden Yards - 89-73
1994 Indians - Progressive Field (Jacobs Field) - 66-47
1994 Rangers - The Ballpark in Arlington - 52-62
1995 Rockies - Coors Field - 77-67 : Lost LDS
1996 Braves - Turner Field - 103-59 : Lost WS
1998 Diamondbacks - Chase Field (Bank One Ballpark) - 65-97
1999 Mariners - Safeco Field - 79-83
2000 Tigers - Comerica Park - 79-83
2000 Astros - Enron Field (Minute Made Park) - 72-90
2000 Giants - AT&T Park (Pac-Bell Park) - 97-65 : Lost LDS
2001 Brewers - Miller Park - 68-94
2001 Pirates - PNC Park - 62-100
2003 Reds - Great American Ballpark - 69-93
2004 Phillies - Citizens Bank Park - 86-76
2004 Padres - Petco Park - 87-75
2006 Cardinals - Busch Stadium - 83-78 : Won WS
2008 Nationals - Nationals Park - 59-102

The evidence is pretty much split. Some teams fared well in a new stadium, others not so much. If the Mets and/or Yankees are really good this year, it won't have anything to do with players being giddy over a new home.