With regard to my alternate passion (golf), it would be the great Bobby Jones (only man to complete the grand slam in the same season). In our sport Valle is great, but I always was amazed at Mike the Bike Hailwood--he could ride back-to-back bikes that shift on left or right, up for up, down for up, etc. and ride them all at or below the track record. Plus with his 1978 IOM win, he put Ducati back on the map. American football it would be Jim Brown, a 1000-yard-season runner when the season was only 10 games. Baseball is The Babe as in Ruth. Drag racing is Don Big Daddy Garlits. Offroad, desert, endure racing its Malcolm Smith. Overall outrageousness (for the time) using/with bikes, its Evil Kneivel.