Peyton Manning's Duke passing camp underway, sans Demaryius Thomas

UPDATED 4/9/14

Demaryius Thomas is in fact at Manning's Duke passing camp. Check out the latest here.

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The Broncos' 2014 offseason workouts won't begin until April 21st, but that has never stopped Peyton Manning from exercising his arm with his teammates anyway.

Manning and his receivers (and a tight end) are at Duke University this week, working out and running routes, a tradition Manning has upheld ever since he signed with the orange and blue in 2012. In the past, Eric Decker and Demaryius Thomas were the usual attendees of Camp Manning, but this year, it's mostly a new crew.

In order to be the best, you have to work like you're the best!! #Bronconation pic.twitter.com/vk8R6aGGvf

— Emmanuel Sanders (@E_Sanders88) April 8, 2014

Your 2014 attendees of Camp Manning, pictured from left to right: Wes Welker, Manning, Andre Caldwell, Emmanuel Sanders, and Julius Thomas. Yes, Bubba finally got his invite.

Eric Decker, of course, signed with the New York Jets. Demaryius Thomas separated his shoulder in Super Bowl XLVIII and so is absent from this year's Camp Manning.

It's always great to see Peyton Manning working out with teammates weeks before the NFL will allow it at Dove Valley. Preparations for the 2014 season have officially begun. Go Broncos!