Adam Thielen Autograph, signed in black on white numbers, on a custom purple Minnesota Vikings Jersey complete with Beckett COA. Adam John Thielen is a wide receiver for the Minnesota Vikings. He played college football at Minnesota State and signed with the Vikings as an undrafted free agent in 2013. Thielen holds several NFL records, including eight straight games over 100+ yards receiving, and 74 receptions in the first half of a season.