I know it's tough to tell right now, but just thought I would share this one and see what you guys think. I had this deer walk underneath me last year, and I will let you know how old I thought he was last year during the rut.
If you cut his antlers off and I had to just look at his body in this photo, I'd age him at 3.5+. With that said, I would not be surprised if he were 4.5.