^^^If we assume that in general a world class performer started their activity at around age 5 (as seems to be fairly common give or take) then true experiential learning would be very difficult as the subject probably has little prior experience (of anything) to call upon and likely doesn't have the cognitive reasoning to be able to reflect on the learning anyway. So finding examples given those assumptions is unlikely, coupled with the fact that, wrongly in my opinion, coaches working at that level rarely if ever get any recognition for the excellent work they do. The guided discovery principal is still incredibly effective at these early ages though (albeit through my own experiences).
There are countless examples however, of using guided and experiential learning techniques, once athletes reach a level of cognitive maturity, to deliver world class performance.
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