It’s been a few months since former Tampa Bay Buccaneers quarterback Tom Brady has made many public appearances after announcing his retirement from the NFL last month. But on Saturday, Brady was seen sitting in the audience of the UFC 285 event alongside former teammate Mike Evans. And it’s safe to say that he looked quite different than the last time the world saw him – especially in his face.

Saturday night, a camera captured Tom Brady sitting in the crowd wearing a gray baseball cap, and his face certainly looked quite unusual, compared to how he’s looked in the last. He looked much gaunter and perhaps tighter than before and his cheeks were quite a bit concave.

Whether it was plastic surgery, a change in diet, or a change in lifestyle, it’s clear that Brady looked very different than he did several months ago. And the NFL world definitely noticed.

As some suggested, it appears that Brady underwent a buccal fat removal surgery, which can be performed to “highlight the bone structure in your face, especially your cheekbones and the hollowed-out areas between your cheeks and jawline,” according to Cleveland Clinic.

Whatever it is, it definitely does not look natural.

[Ari Meirov, Cleveland Clinic]