PITTSBURGH (AP) — Somewhere between the catfish lobbing, A-list national anthem singers, and Charles Barkley's surprise cameo, there's been another notable development during the Stanley Cup Final: A series has broken out. Perhaps the seeds of an upset, too.

A week ago, the Nashville Predators headed home down 2-0 to the defending Stanley Cup champion Pittsburgh Penguins.

But now, the vibe inside PPG Paints Arena for Game 5 tonight figures to be more anxious than anticipatory after the Predators evened the series at 2-2, delivering a very clear message that the first-timers are a clear threat to become first-time winners.

Through four games, Nashville has more goals, more shots on goal and a bit more swagger than Pittsburgh. What began as a two-month slog to the Cup is now a three-game dash, one that appears to be a coin flip.