Back in August I did a sprint triathlon and then started doing some heavier training and it was then that my left leg first started whispering to me that it might have had enough, thank you very much. Then on August 31st I did the New Mexico relay it turned into a loud murmer. As a former teacher, I've learned to ignore loud murmers and so in mid-September, I did another run - the Colorado Relay - and it seemed to be annoyed, but I could still run at my usual pace.
Then, of course, I tried to do a teensy weensy run in my neighborhood about a week later, and, well, that was it. Pfffttt. Game OVER. Stupid leg.