Conor McGregor might've taken a big L in the Octagon, but he's still winning in life -- just ask the Dallas Cowboys ... many of whom might be guzzling his booze tonight on his dime.
The former UFC lightweight champion hit up AT&T Stadium Sunday before the Cowboys' game against the Jaguars to with meet with players and Cowboys brass. Sources close to the meeting tell TMZ that Conor handed out a ton of bottles of his new whiskey, Proper No. 12, to a number of players on the field ... a lot of whom he also got to meet in person.