Does marijuana actually affect reaction time long term?

I have started smoking weed a couple months ago and was wondering if it can affect reaction time. For example, I play baseball and I can hit a fastball quite easily cause I can react quick enough and I have a good reaction time. But i was wondering if I smoke to much or to long will my reaction time be affected permanently and eventually become a worse hitter? Also, what are some other negative affects of marijuana long term?