1928: two-year-old season As a two-year-old, Trigo proved himself one of the best of his generation in Ireland. He was unplaced in a five
furlong race at the
Curragh on his debut and then ran third in the Waterford Testimonial Stakes over the same course and distance. He then emulated his older brother by winning the Phoenix Plate at
Phoenix Park from sixteen other juveniles and added the
Anglesey Stakes over six furlongs at the Curragh, beating two moderate opponents at odds-on. Two days after his win in the Anglesey Stakes he ran again at the Curragh, this time in the
Railway Stakes and finished second to the
filly Soloptic, who was carrying fourteen
pounds less weight. The value of this effort became evident the following year when Soloptic won the
Irish 1000 Guineas and the
Irish Oaks. In autumn, Barnett sent Trigo to be trained in
England by the Irish-born veteran
Dick Dawson at Whatcombe, near
Lambourn in
Berkshire Rogers was sorry to see the horse leave, describing him as "the best colt that has ever left Ireland".
1929: three-year-old season In spring 1929 Barnett turned down an offer of £20,000 for the colt from the
Aga Khan. Trigo made his first English appearance in April when he won the seven
furlong 1929 Berkshire Handicap at
Newbury Racecourse. Trigo performed well in exercise gallops and was described as "the best of the Whatcombe three-year-olds". despite doubts about the 2000 Guineas winner's ability to stay the mile and a half distance. Dawson's stable jockey, Michael Beary elected to ride Le Voleur, leaving the mount on Trigo to the twenty-year-old
apprentice jockey,
Joe Marshall. On the day before the Derby the fine weather which had prevailed throughout the spring changed abruptly, and heavy, persistent rain altered the ground from firm to soft. Despite the miserable weather, the race attracted a record crowd, estimated at half a million. Marshall settled Trigo just behind the leaders in the early stages before moving up to dispute the lead with the well-fancied Hunter's Moon on the turn into the straight. Marshall said after the race that he "never really had an uneasy moment". Barnett had made no secret of his confidence in Trigo, and many of his fellow Belfast residents backed the horse heavily. and he was opposed in the betting by
The Oaks winner Pennycomequick and the
Grand Prix de Paris Hotweed, with
Lord Derby's colt Bosworth also strongly fancied. Ridden on this occasion by Michael Beary, Trigo raced prominently before overtaking Bosworth in the straight and holding off a renewed challenge from Lord Derby's colt to win by a short head. The racing correspondent of
The Times claimed that he had "never seen a gamer exhibition by two colts " than that provided by Trigo and Bosworth. ==Stud career==