Siemian still uses his Northwestern email address! Manning isn't happy about that though...
Trevor Siemian has done a lot of things right this preseason. He's played well in games and performed well in practice for the Denver Broncos. He's recovered from the knee injury that ended his Northwestern career a game and a half early. He's beaten out Zac Dysert for the third-string job.
He's also done some things wrong. Well, at least according to NFL legend Peyton Manning.
Per Manning, Siemian has two major problems: