Like others have said, you didn't include your running workout which you say is hard. Is it a hard mile each day you run? 2? 3? If you ran a hard 1-1.5 mile a day then you could be fine. I know college players who have done that and they, esp the running backs, have big legs. Same thing goes for track athletes and soccer players. JPM offers a good routine that I use right now and frankly like, adding 5 pounds each workout that I accomplish the 5 reps in the previous workout. Keeping a closer stance on your squats will be good IMO. Keep your carbs up, stretch daily, repair those muscles from the wear and tear. Add one day of sprints and take out a lengthy run, that will build some size IMO. You could also add in a day of the elliptical machine which can add a different twist to the thighs and actually complement your running and/or sprints.