Altitude wrote:
What I said was that the people who discredit this performance are ignorant to the differences of competing at altitude verses sea-level. You can argue conversions all day long, but NO one in the world can run as fast at altitude as they can at sea-level under the same conditions. It is physiologically impossible.
No, that's not what you said. I quoted what you said.
And you're wrong about it being "physiologically impossible" to run as fast at altitude as one can run at sea level. At higher altitudes, air resistance is lower. That's significant not only in the sprints and jumps, but also in middle distances, particularly for faster runners who are well-adapted to higher elevations. In Mexico City, Ralph Doubell -- a sea-level athlete from Australia -- tied the world record for 800 meters, running the fastest time of his career, and Kip Keino ran the fastest 1500 of his career, less than two seconds off Jim Ryun's world record. The optimal altitude for producing fast times can be different for different runners at different distances.
In any event, it was a terrific performance by Casey, and fun to watch.