Perry Kitchen goes up for a header against the Seattle Sounders’ Brad Evans. (Photo by Tony Quinn

Nationals 7, Cubs 4: A few years ago, Chad Tracy was supposed to be the Arizona Diamondbacks’ next big thing. In 2005 and 2006, he averaged 24 home runs, 80 runs batted in, a .294 batting average and routinely came up with clutch extra-base hits. Then his bat went cold and eventually dropped out of Major League Baseball, spending 2011 in Japan. But now Tracy’s back, wearing a Nationals uniform, and coming up big in two critical pinch-hitting appearances. On Thursday, it was the ninth-inning double that sparked the Nats’ go-ahead rally. And yesterday, with the Cubs up 4-2 in the eighth inning, the Nationals rallied back, fueled in large part by Tracy’s swing.

Danny Espinosa got it started with a solo home run. The next three batters reached base, and with the bases loaded, Tracy cracked a two-run double to put the Nats ahead. Tracy became one of the top trending topics on Twitter in the excitement yesterday afternoon. “Nice to know,” Tracy told the Post. “I’m not a Twitter guy.”

Capitals 4, Rangers 1: On the final day of the NHL’s regular season, New York goaltender Henrik Lundqvist must have been more concerned with today’s front-page and center-spread profile in The New York Times’ sports section than he was with the puck, because the Caps, jockeying for a better playoff position, made easy work of the Broadway Blues. With the win over the Rangers, the Caps finished the season 42-32-8 with 92 points, good for the No. 7 season in the Eastern Conference and a trip to Boston to face the reigning Stanley Cup champion Bruins starting Thursday.

D.C. United 0, Sounders 0: For the third time in five games this season, D.C. United’s offense went lifeless. At least the defense was able to hold the Seattle Sounders’ usually potent scoring attack just as anemic, in a game in which the teams combined for more definite articles (one) than they did goals. Seattle defender Marc Burch, formerly of D.C. United, nearly made it a game when he head-butted the ball toward the goal with moments to go, only to have it clang off the crossbar. “That son of a bitch,” D.C. United Coach Ben Olson said after the game. We’ll have the longer writeup tomorrow.