[10][5] He led the U.S. in victories in both 1906 and 1907, winning the United States National Riding Championship both years.
[3][7][11][12][10] Between 1905 and 1908, Miller won 1,094 races from 4,336 mounts which is an extraordinary 25.2 winning percentage.
[7][12] On July 29, 1906, Walter Miller rode five winners on a single racecard at Brighton Beach Race Course.
[14] He set a record by riding eight consecutive winners, over a two-day period at Benning Race Track.
[10] His career ended in the United States after he gained weight as a late teenager.