Johnnie Hoskins!!!
The history of the 'Hammers' season 1928-39
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"On may 2nd 1929, Bluey Wilkinson made his 1st appearnce riding a douglas. He rode off 5secs.. Handicap and was unplaced in his heat. later in the evening Bluey won a heat of the Golden Gauntlet at 37.19 m.p.h with reg Bounds second. He was beaten by Vic huxley in the semi, which was won at 39.96 m.p.h. Bluey was in the team one week and out the next. Tiger, however, rode consistantly well and except for accidents never missed a match."
Perhaps Jonnie may have been wrong it is not unheard of !