from Dean's article:
"In 1935, Muscletone won the Prix d'Amerique at age 4 less than six months after winning a heat of the Hambletonian at Goshen. He won again in 1937 and American-bred horses were quite successful in the 1930s."
end of quote
Greyhound lost nearly the entire 1937 season (there were many races for him anyway) due to a much-hyped match race between Greyhound and Muscletone that NEVER materialized.
E. J. Baker paid the expenses for a contingent of Euro folks to come to America and see a few races of Greyhound. (I'm assuming Mr. Baker also paid their incurred expenses stateside as well).
Upon seeing Greyhound in action, they gasped (with mouthfuls of flies) shut their traps and returned home with their tails between their legs.
Upon returning home and approaching the deadline for ocean-liner passage, it was reported that Muscletone was lame.
His lameness didn't stop him from winning other Euro races that year