By Chris Emma–

CHICAGO (CBS) — To borrow verbage from the great Pat Hughes, the Cubs have gotten out the tape measure plenty this season. On Wednesday night at Wrigley Field, they did so with a franchise milestone.

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With a 414-foot homer in the third inning against the Pirates, Ian Happ became the sixth Cubs player to hit 20 homers this season. It marked the first time in franchise history that has occurred. Happ joined Anthony Rizzo, Kris Bryant, Kyle Schwarber, Willson Contreras and Javier Baez in that company.

The Cubs also became the first team in MLB history with five players to hit 20 homers in their age 25 or younger season, according to Chris Kamka of Comcast SportsNet in Chicago. The ages of the six are 28, 25, 25, 24, 24 and 23.

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Of this group, four were Cubs first-round picks, with Bryant (2013), Schwarber (2014) and Happ (2015) drafted by the team in consecutive years.

Happ’s home run gave the Cubs a 5-2 lead over the Pirates in the third inning.

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Chris Emma covers the Bears, Chicago’s sports scene and more for CBSChicago.com. Follow him on Twitter @CEmma670 and like his Facebook page.