(CNN) — Week 2 is headlined by a Super Bowl rematch between the Philadelphia Eagles and Kansas City Chiefs, while across the league several contenders are fighting to avoid the dreaded 0-2 start.

It may be early, but the urgency is already real . Here are 5 things to know about Week 2:

Super Bowl rematch

The Chiefs opened their season with a stumble in Brazil, falling 27-21 to the Los Angeles Chargers. Now, it doesn’t get any easier: Kansas City welcomes the defending champs on Sunday in a Super Bowl rematch.

Philly blew out the Chiefs 40-22 back in February’s Super Bowl, and oddsmakers like the Eagles again. In fact, it’s the first time Patrick Mahomes has been a home underdog since October 2022 against the Buffalo Bills .

History though says that might not be such a bad thi

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