Red Sox DH David Ortiz used his 40th birthday and the Players' Tribune website to officially announce that next season will be his last season.

In a 2-minute 26-second video Ortiz explains why he's calling it a career after 2016. "I wish I could play another 40 years...but it doesn't work that way," Ortiz said. "After next year, hang this up. So let's enjoy next season."

The final regular season game of 2016 is October 2nd at Fenway Park against the Blue Jays.

Then post season?