[4] The author felt that the three-year old racing horses during the 1919 season were a "good crop" and that the course record of 2:03+2⁄5 set by Old Rosebud in 1914 could be broken.
[4] Sennings Park, a horse who stayed through the winter at Churchill Downs, ran a mile at the track in 1:43 3/5, the best time of the season in late April.
[5] For the first time in race history two horses from the same owner finished in first and second place.
[10] In addition, Ross became the first Canadian owner to have a horse win the Kentucky Derby.
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