Fans outside PNC Park fill up to the streets trying to enter.

Fans packed the sidewalk in front of PNC Park's home plate rotunda, backed up all the way onto Mazeroski Way trying to enter the ballpark for the most important day in Pittsburgh baseball since 1992.

And yes, it will be more important than Wednesday or Thursday or any single day the Pirates play at PNC Park until October. Getting two games against the St. Louis Cardinals and the opportunity to jump into the driver's seat of the NL Central shows the day's importance. When else will the Pirates have the chance to add two wins and hand their toughest division foe two losses on the same day?

Don't confuse the importance of Tuesday's doubleheader with the Pirates' playoff chances. Pittsburgh enters the day owning a 95 percen...

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