With Jim Kelly going into surgery today for his recurring oral cancer, fellow Bills legend Andre Reed has recorded a message of support for his former QB -- and TMZ Sports has the exclusive audio.
In the emotional letter Andre penned and narrated, Reed calls Kelly "one of the strongest men I've ever met"... and tells his longtime Buffalo teammate he knows he can beat the disease -- something Jim's already done twice in his life.
"You've quarterbacked through a lot of things in the last 20 years of your life.