Cubs celebrate first pennant since 1945

Cubs shortstop Addison Russell celebrates in the clubhouse.

Chicago Cubs players Ben Zobrist , Anthony Rizzo and Jake Arrieta celebrate in the clubhouse after defeating the Dodgers in the NLCS.

Chicago Cubs shortstop Addison Russell (middle) celebrates in the clubhouse with teammates.

Cubs starting pitcher Jon Lester gets beer poured on his head in the clubhouse after Game 6.

Chicago Cubs players celebrate in the clubhouse after defeating the Dodgers in the NLCS.

Cubs catcher Willson Contreras takes a selfie with fans after defeating the Dodgers in the NLCS.

Cubs starting pitcher Jon Lester and infielder Javier Baez celebrate after receiving the NLCS MVP award.

Cubs manager Joe Maddon tips his cap after winning the NLCS.

Cubs first baseman Anthony Rizzo celebrates after Game 6.

Cubs starting pitcher Jake Arrieta hugs first baseman Anthony Rizzo after Game 6.

The Chicago Cubs celebrate after winning the NLCS.

Jon Lester celebrates with his children after the Cubs captured the NL pennant.

Chicago Cubs third baseman Kris Bryant (center) celebrates with teammates after winning the NLCS.

Chicago Cubs third baseman Javier Baez hugs a teammate after winning the NLCS.

Starting pitcher John Lackey (41) hugs Theo Epstein after the Cubs captured the pennant.

Cubs right fielder Jason Heyward, relief pitcher Carl Edwards, first baseman Anthony Rizzo, and catcher David Ross celebrate after Game 6.

Cubs owner Tom Ricketts raises the National League Championship Series trophy.

The Cubs celebrate after downing the Dodgers in Game 6.

The Cubs celebrate after the final out of Game 6.

First baseman Anthony Rizzo, third baseman Kris Bryant, shortstop Addison Russell and second baseman Javier Baez celebrate after Game 6.

The Cubs gather for a group photo after winning Game 6 of the NLCS.