You're right about the receptions; I was actually thinking of yards when I responded. He was essentially our second wide receiver that year. Outside of Diggs, the other options were not very good. Gabe Davis never lived up to expectations.
The drop in KC was just one play; however, two years of struggling to block and run effective routes is a different story. I hope he breaks out, but right now, he seems like an athlete without a real football position.