Washington and Baltimore face off in their annual beltway battle tonight, and for the Redskins, it’s a measuring stick game. For the first time this preseason, coaches have game-planned specifically for the Ravens.

Tonight should also bring some clarity to the quarterback situation. Rex Grossman has been named the starter, but John Beck is also expected to get time with the first-team offense.

Here are five of the biggest story lines to watch tonight, along with LaVar Arrington’s keys to the game. Feel free to share your thoughts on the game in the comment section below, and for in-game commentary and updates from Baltimore, check out @MikeJonesWaPo, @RickMaese, @barrysvrluga and @JReidPost on Twitter.

Kickoff: 8 p.m., M&T Bank Stadium | TV: ESPN