At a previous job my commute was 26 miles each way. I only biked it a few times that summer. But one day a storm hit as I was going home. The rain stopped but the road was wet. My front tire hit a seam in the road and down I went. My right ankle got sliced open by the front derailleur. I continued to ride for a few miles until I caught the bus for the balance of the ride. When I got home, my wife looked at the ankle and off we went to the emergency room for 5 stitches.