Before Alvin Kamara, there was Charlie Garner.
Both were mid-round picks out of Tennessee. Both were (are) diminutive, dynamic all-purpose backs. Both played for offensive masterminds and made a big impact for not-quite championship-caliber teams. Heck, Kamara and Garner were almost the same guy!
Or perhaps our memories of Garner are a little cloudy. Yes, he was one of the most effective all-purpose runners of his era, with five top-10 finishes in rushing DVOA and four top-10 finishes in receiving DYAR. But times were tougher for everyone, especially tiny scatbacks, in the days when running back workloads weren't well monitored, marijuana use was considered a serious character issue, and concussions often went undiagnosed.