Federer busts out the disapproving dad face in backstage pic

The BNP Paribas Open's Vine account caught a great Roger Federer moment backstage after his win Saturday.

Roger Federer beat Alexandr Dolgopolov Saturday in the semifinals of the BNP Paribas Open to set up a Sunday title showdown against his old rival Novak Djokovic, then gave us a beautiful memory behind the scenes.

Federer was making the customary post-match rounds signing autographs for the ballkids when the official BNP Paribas Open Vine account caught a great moment.

We've already expounded on Federer's acumen for selfies, but the disapproving dad-looking face at the end of this clip, complete with crossed arms, really takes the cake:

Something tells us his twin girls have seen that look once or twice.

Federer even retweeted the Vine from his official account.