Every playoff series develops its own personality, with subtle weaknesses suddenly exploited, mistakes magnified and hot-swinging hitters becoming indelible playoff heroes over just a few plate appearances. The excitement of the new wild-card format means that four teams will be fighting for their postseason lives today, and there are plenty of specific elements we'll be watching as the series are decided.
Here are the 10 biggest matchups of the wild-card round.
Phillies-Marlins
The Phillies vs. the pressure