The Cubs defeated the Arizona Diamondbacks, 6-4 on Sunday (9/6), completing a 3-game series sweep. The win moved the Cubs record to 78-57. It's the most wins they've had in a season since 2009. With less than a month remaining for the Cubs in the 2015 regular season, every victory gets them that much closer to their first postseason appearance since 2008. They currently hold a bulky lead over both the San Francisco Giants and Washington Nationals for the National League's second Wild Card position.

It was a hot, humid day at Wrigley Field on Sunday. 41,000 fans were treated to a Grand Slam by Miguel Montero and a 495-foot blast by this year's surefire National League Rookie of the Year, Kris Bryant (video below). The Diamondbacks rallied for 3 runs in the 9th, but still fell short.

Even with a sizable lead over their closest Wild Card competition, Cubs fans won't go into celebration mode too early. Everybody knows the Cubs haven't won a World Series since 2008. Everybody knows about Steve Bartman in 2003. They still have 7 games remaining against the Pittsburgh Pirates, the team they are likely to face in the Wild Card game in early October. They also have a chunk of games remaining against the team with the best record in baseball, the National League Central-leading St. Louis Cardinals. That's a lot of games versus two very talented opponents. One way to look at it is as preparation for the postseason for this young, up and coming bunch. Cubs fans just hope the Cards and Pirates don't have a hand in knocking them out of the postseason. The Cubs romped the Cardinals, 9-0 in the opener of their 3-game series Monday afternoon.

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