Sunday was a great day in baseball history, when Tony Gwynn and Cal Ripken Jr. took their place in baseball's Hall of Fame, honored as much for their careers on the field as their character off the field.

But last week, a storm of scandal and controversy rained down on America's biggest sports. One of the NFL's top quarterbacks, Michael Vick, was charged with involvement in illegal dog-fighting. An NBA official is being investigated for allegedly betting on and fixing basketball games he refereed. The Tour de France suspended several bicyclists charged with cheating, including illegal blood transfusions, or "blood doping." And Barry Bonds' chase of Major League Baseball's home run record is clouded by allegations of steroid-use.

Has the integrity of professional sports taken a turn for the worse?

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