1. An acquaintance who ran 1:49 in high school, went to college on scholarship, lasted about 6 weeks and chucked it.
2. My neighbor, whom I talked into going out for track in high school, started out a straggler, turned into pretty darned good, broke 9:00 in the steeple off zero summer training, packed it in after college.
3. A good friend, ran 1:45 in college, also rarely trained in summer, quit as soon as his last college meet was over.