Ryan Braun, who was originally at first base, was called out at second and Segura was allowed to remain at first. He was on second base and he stole first. That's a real thing that happened.
Not only that, but Segura tried to steal second base after that play and was thrown out. He stole second base earlier in the inning. His inning went infield single, steal of second, steal of first, thrown out at second. What the what.