Why the Penguins are wearing yellow jerseys and what NHL rules say about it

The Pittsburgh Penguins have been wearing their yellow third jerseys at home throughout the first round of the Stanley Cup playoffs against the Philadelphia Flyers, including Games 1, 2, and 5. The team proactively requested and received permission from the NHL to wear the alternate uniforms, rather than being required to do so by the league. While the Penguins have not publicly explained their reasoning, team sources suggest it was likely a business decision, as third jerseys sell well and playoff exposure boosts merchandise revenue.