Reinjured my pulled hamstring

Hey guys, I’ve got a question. Five weeks ago I pulled my hamstring during football (soccer). I rested and did some recovery workouts, and after about four weeks everything seemed totally fine. I even waited an extra week to be sure before playing a match again. For most of the match it went really well, but then I pulled it again. It wasn’t as bad as the first time, but it was still a pull.

My question is: have any of you returned to full sprinting after a hamstring injury? My strength has always been my speed, and I want to get even faster. Does a hamstring pull mean it can never get stronger than it used to be? Anyone have experience with this?