Washington Capitols star T.J. Oshie -- the hero for the U.S. Olympic hockey team -- is officially a married man ... after tying the knot to his ridiculously attractive baby mama.
Oshie and his longtime GF, Lauren Cosgrove, got hitched in a ceremony in Minnesota this weekend ... surrounded by friends, family members and their 16-month-old daughter, Lyla.
A few of T.J.'s former St. Louis Blues teammates were there too ... including David Backes.
Check out the pics ... T.J. did good.
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