You can't just level drug accusations every time a collegian improves. It is not as if he drops a 1:41 at "18" or anything; he barely broke 1:45 at UVA. His time was not one of the best all time. There are many guys who run 1:45-46 in college. But he has real talent. This is a guy who ran 11.74 and 4:30s in high school while hardly training. He then ran 22 and 48 without knowing how to start from blocks. He ran 1:48 twice at UT. The following xc season, he dropped a ton of time on 50 miles per week for the first time and broke 25 for 8k. So, a guy who has excellent basic speed for an 800m runner markedly increases his mileage for the first time and suddenly has very good endurance for an 800m runner, is going to run 1:45-46 that year. Unfortunately, he was running in the xc postseason on a stress fracture (he does not quit) and that put him out for most of the track season at Tampa last year. In other words, he was already going to run 1:45-46 last year, so when he did it this year it was not a surprise at all to his coaches. It's that mileage that is allowing him to use his natural speed at the end of races, because he's not as tired as these 15-30 mpw 800m guys.