Douglas Murray of the San Jose Sharks skates against the New Jersey Devils during the first period of an NHL hockey game on February 11, 2011 at the Prudential Center in Newark, New Jersey. (Getty Images)

Douglas Murray, defenseman for three NHL teams over 518 games, has retired.

“30 general managers do not want me,” Murray told Aftonbladet. “I know that I can still play, but it’s over now.”

The 36-year-old Murray last played during the 2014-15 season for Kolner Haie when he dressed for eight games. Two months after injury ended his time in Germany, he joined the Calgary Flames on a tryout for the final month of the season but never played a game.

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Drafted in the eighth round of the 1999 NHL Draft out of Cornell University, Murray, sometimes known by his nickname of Crankshaft, spent the first eight seasons of his career with the San Jose Sharks. The 6’3, 245 lbs. blue liner may not have been the most fleet of foot but could deliver a big hit as the brick [poop]house that he was.

Good thing he didn’t go into massage therapy:

Murray’s time in San Jose ended in 2013 when he was dealt to the Pittsburgh Penguins for a pair of second round picks. That summer he moved on to the Montreal Canadiens on a one-year deal and played only 53 regular season games before signing in Germany.

Now that his hockey career is done, Murray can focus on the invention he and some friends at Cornell came up with. The UberTap, also known as a college kid’s dream, is a beer dispensing system that uses a foot pump that can fill three cups at once to help speed up keg lines.

“It took too long to get beer in college. It’s about five times as fast to fill up,” Murray told the Calgary Sun in 2009.

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Sean Leahy is the associate editor for Puck Daddy on Yahoo Sports. Have a tip? Email him at puckdaddyblog@yahoo.com or follow him on Twitter! Follow @Sean_Leahy