Help with the speed

is there any drills or exercises that will help my pitch gain more speed as it is now…im 13 going on 14 and my 4 seamer is around 63-70…i know its not that quick but is there anything that will lead to getm more speed on em?

Your velocity sounds great to me.

Any more and you would probably run the risk of injuring yourself?

Are you having a problem?

If you can develop a good change-up, you could be lights out. 13-14 year old hitters have a hard time adjusting to big changes in velocity, so if you can drop a 60-62 mph change in there the next four seamer will look like 80. A good change will help you as you get older as well.