Fashion is not a common consideration for true sports fans. It's put up or shut up. As former UCLA football coach Red Sanders first said (not Vince Lombardi), "Winning isn't everything...it's the only thing."
But then again, you don't want your team going out there looking like a bunch of chumps. All eyes are turned to the men on the field. Or ice. Or court. And you want your team to look cool!
Of course, there's the old home-and-away dichotomy for uniforms, but it's helpful to have a third jersey as a change of pace. Unless your team's kit is so classic that it could hang in a museum (the New York Yankees pinstripes, for example), an alternate jersey can be a powerful thing.
Some fans believe in a sacred luck bestowed by the alternate jersey. "We've never lost at home wearing our alternates in the month of October," some might say. Other fans just want a third jersey to wear when the other two are in the wash during a grueling baseball season.
Whatever the reason, alternate jerseys can be a great thing. They may be loud. They may be tasteful. But they must be cool.
So here's the very coolest alternate jerseys from the NFL, NHL, MLB and NBA.