If you want to root against the Oakland Athletics, you might consider rooting for the Giants, rooting for the comeback of Barry Bonds that may take place as soon as this week.
Every drop of ink spilled in the name of Bonds, every comma devoted to the Giants climbing up to fight the mediocre Padres for the NL Division Lead - every word of it takes the attention and the market share away from the A's.
Team Green and Gold were just starting to have a season in the sun and they could suddenly wind up in the coldest, darkest shadow. This translates into everything from franchise cash to players choosing the team based on its glamour, or lack thereof. The Giants making news subtly but consistently takes away the Oakland A's market share, their commercial viability, their competitive edge.