Inconsistent with velocity

My last game I topped out at 84, sitting at 80.

I threw a bullpen today and I couldn’t have been throwing harder then 80. Why is this happening?

bump

Could be a number of reasons. Could be it’s late in your season and you’ve got a case of dead arm. Could be a mechanical issue. Could be a timing issue.

Got any more info to pass along? Or video?

Pitchers generally throw harder in competition than when throwing a side bullpen. Adrenaline, batters being there, your catcher, etc. It happens.