Welcome to The Monday 9, our new weekly lineup of Things You Need to Know in baseball. The MLB season is a marathon, so get caught up each Monday morning right here at Yahoo Sports.
Leading off: The NL East cannot do anything right
The New York Mets and Philadelphia Phillies played a baseball game Sunday night, and everyone came away angry and confused. With the nation watching for a glimpse at the star-studded rosters vying for one of the most hotly contested division crowns, the rivals used the occasion to fully acclimate everyone to 2021 NL East Baseball.