I agree with Jake, If your speed is too low most colleges will not look at you. If you have never worked on velocity the time now! Ian.
For Pro try outs, the speed on the jugs gun is even mor pronounced: 88 for righties and 85 for lefties and that is just to get on the field.
Only exception is knuckleball pitchers but that is whole different skill set and you are not throwing one. Ian