Sir Barton
Sir Barton became the first American Triple Crown winner in 1919, just about the time when it was becoming recognised as a series of races worth winning. He won the Kentucky Derby as a maiden (never winning a race before) and also won the Preakness just four days later. Then, he won another stakes race before winning the Belmont Stakes, which was at the distance of 1 3/8th miles then. He was amazing horse, though ran second to the brilliant 3year-old Man O'War the following year in a match race. Though, it is said he was suffering from hoof soreness at the time.
Yes. War Cloud was the first to compete in all three races. But, Sir Barton was the first to win all three.
Because it is the first race in the Triple Crown and if a horse wins it then there is a possibility for a Triple Crown winner.
The first horse to ever win the triple crown was Sir Barton. Sir Barton was born in 1916 at the breeding farm of Madden and Gooch in Kentucky.http://triple-crown-racing.suite101.com/article.cfm/sir_barton_won_first_triple_crown
Sir Barton
The Kentucky Derby is the first leg of the Triple Crown, a horse that wins the Kentucky Derby, The Preakness, and the Belmont Stakes becomes the Triple Crown Winner
horse racing was probably the first sport to use the term triple crown. obviously, this term is used in other sports such as baseball, but it originated from horse racing.
Secretariat won the triple crown in 1973. He was the 9th horse to do so in 25 years.
Horse racing
Secretariat won in 1973.
Seattle Slew won the Triple Crown in 1977.
The horse that won the TC in 1919 was Sir Barton
Secretariat