Like I have done for the past 6 years I made a 35 mile trip to shoot a small college basketball game. After watching the teams warm up I made my usual check of my setting since I would be shooting at 3200 ISO. BUT I then notice my camera battery was still in the charger back home. I had no choice but to drive (seems the car was flying) back home and get the battery - arrived back at the end of the first half.
Lesson learned - will not happen again. My grip holds two batteries and I'm ordering another one day so there will ALWAYS be a spare battery in the camera. I already keep an extra flashcard in the vehicle.