Most teams that reach the World Series suffer a falloff in team ERA the following year, writes Tim Kurkjian of ESPN.com. Whether the defending champion San Francisco Giants will succumb to the trend, however, remains to be seen.... We looked at the World Series participants in the past 10 years, and the effect on the pitching staffs the following seasons to those 20 teams. Fourteen of the 20 -- 70 percent -- had an ERA increase the next season. Eight of the 20 -- 40 percent -- had an increase of least a half run, which is substantial. The 10 teams that won the World Series averaged an increase in ERA of .281. The 10 losing teams averaged an increase of .213. The Detroit Tigers went to the World Series in 2006 and compiled a 3.84 ERA, but had a 4.57 ERA the next year, a .73 increase. The St