The first sign of Teenoso's potential came eleven days later at Newmarket Racecourse, when he contested a maiden race over one and a half miles on heavy ground.

[4] Teenoso's improving form and proven ability on heavy ground saw him made third favourite for the Lingfield Derby Trial in May.

[1] When Lester Piggott, who had won the race eight times previously, elected to ride Teenoso in the Derby, the colt was strongly supported in the betting and started 9/2 favourite in a field of twenty-one runners.

[6] The Irish Derby at the Curragh three and a half weeks later saw a meeting between Teenoso and the Prix du Jockey Club winner Caerleon.

In contrast to Epsom, the ground in Ireland was unusually firm and Teenoso appeared to be unsuited to the conditions as he finished third, beaten by Shareef Dancer, who won impressively, and Caerleon.

In his trial race, the Great Voltigeur Stakes at York in August, he ran disappointingly, finishing third to Seymour Hicks and Dazari.

It seemed that Teenoso's injury would end his career, but subsequent examinations revealed it to be less serious than first feared and he was able to return to training in late autumn.

He started favourite, but in his first run for eight months he was beaten into third place behind Gay Lemur and Dazari, both of whom were receiving weight from the Derby winner.

In his next race, Teenoso returned to Group One level for the first time since the 1983 Irish Derby as he was sent to France to contest the Grand Prix de Saint-Cloud.

[7] The success was gained on fast ground, contradicting the prevailing opinion that Teenoso needed soft conditions to show his best form.

[4] The ground was also firm at Ascot Racecourse in late July, when Teenoso started at odds of 13/2 against twelve opponents in Britain's most prestigious weight-for-age race, the King George VI and Queen Elizabeth Stakes.

The race attracted a strong field including the 1983 winner Time Charter (who started favourite), Darshaan, Sun Princess, Tolomeo and Sadler's Wells.

[10] Other successful flat racers included Carlton (Hansa-Preis) and Starlet (Team Trophy der Volksbanken und Raiffeisenbanken).