If you’re in the Northeast, it’s a pretty good day for a late-afternoon nap, and not just because of the daunting heat on this first day of summer. You’re going to want to rest up so you can catch the match-up of the week tonight with a 10 p.m. EST first pitch, when the Los Angeles Dodgers host the Washington Nationals.

Clayton Kershaw and Stephen Strasburg are squaring off for the first time. Both are coming into this game with 10 wins. Strasburg is undefeated and Kershaw has only one loss. They’re two of the top pitchers in the National League, which has all of a sudden become loaded with aces. Established talents like Zack Greinke, Madison Bumgarner, and Max Scherzer, Strasburg’s teammate and still the nominal ace of the Nats staff, have been joined Noah Syndergaard and Jake Arrieta, who both enjoyed breakout seasons in 2015.