That took some guts. 'Mad Men' star and avid Cardinals fan Jon Hamm attended Game 3 of the World Series at Wrigley Field on Friday night, and he reveled in every minute of the Cubs' 1-0 loss to the Indians.

Judging from this grin, he looks like he had the time of his life.

.@Cardinals superfan Jon Hamm showed up to Wrigley and proceeded to troll @Cubs fans: https://t.co/5HrTllGX8K pic.twitter.com/tCINo1KsoF

— Cut4 (@Cut4) October 29, 2016

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Not only did Hamm wear a Cardinals cap, MLB.com noted it was the style the Cardinals wore from 1900-1919 -- which, of course, coincides with the Cubs' last championship season in 1908. That attention to detail earns Hamm -- a St. Louis native -- additional troll points. And it wasn't an accident or a coincidence, as Hamm's official Twitter account retweeted one mention of the scheme.

Game 4 of the World Series is Saturday night at 8 p.m. ET on FOX. We can only imagine what Hamm might have planned for this one.