2011: two-year-old season Fenomeno made his racecourse debut in a contest for previously unraced juveniles over 2000 metres at
Tokyo Racecourse on 30 October and came home first ahead of thirteen opponents. He was then moved up in class for the Listed
Hopeful Stakes over the same distance at
Nakayama Racecourse on 25 December and finished seventh of the sixteen runners behind Admire Blue.
2012: three-year-old season On his three-year-old debut, Fenomeno won a minor race over 2000 metres at Tokyo on 29 January, beating the subsequent Tenno Sho (autumn) winner
Spielberg into second place. He then stepped up in class for the
Yayoi Sho (a trial for the
Satsuki Sho) at Nakayama and finished sixth of the fifteen runners behind Cosmo Ozora. On 28 April the colt was moved up in distance for the
Grade 2 Aoba Sho over 2400 metres at Tokyo and started the
1.1/1 favourite against sixteen opponents. Ridden by
Masayoshi Ebina, who became his regular jockey, he recorded his first important success as he came home two and a half
lengths clear of Etendard. The colt was then moved into the highest class to contest the
Tokyo Yushun on 27 May in which he started at odds of 13.6/1. He was less fancied than Sunday Racing's other two runners World Ace (the favourite) and
Deep Brillante with the best of the other runners appearing to be
Gold Ship and Grandezza (
Spring Stakes). Coming from well off the pace, Fenomeno produced a strong, sustained run on the outside, but just failed to overhaul Deep Brillante and was beaten by a nose in a
photo finish. After a break of three and a half months, Fenomeno returned at Nakayama in September for the St Lite Kinen, a race which often serves as a trial race for the
Kikuka Sho. He started evens (1/1) favourite in a seventeen-runner field and won by a length from the outsider Sky Dignity after taking the lead early in the straight. He was then matched against older horses in the autumn edition of the Tenno Sho over 2000 metres at Tokyo on 28 October and was made the 2.4/1 favourite. He made steady progress on the outside in the straight but was beaten half a length into second place by the five-year-old
Eishin Flash. Fenomeno ended his season with a run in the
Japan Cup on 25 November in which he stayed on well to finish fifth of the seventeen runners behind
Gentildonna,
Orfevre,
Rulership and Dark Shadow.
2013: four-year-old season after winning the 2013 Tenno Sho Fenomeno began his third campaign in the Grade 2 Nikkei Sho over 2500 metres at Nakayama on 23 March and started the even money favourite in a fourteen-runner field. After tracking the leaders the colt was switched to the outside in the straight, took the lead inside the last 200 metres and won by one and a half
lengths from Capote Star. On 28 April Fenomeno contested Japan's premier extended distance race, the spring edition of the Tenno Sho over 3200 metres at
Kyoto Racecourse and started the 5.2/1 second choice in the betting behind the odds-on favourite Gold Ship. The veterans Meiner Kittz and Jaguar Mail, winners of the race in 2009 and 2010 respectively were again in the field while the other fourteen runners included
Red Cadeaux and
Admire Rakti. After racing in mid-division, Fenomeno moved up to join the leaders on the final turn and took the lead 400 metres from the finish. He accelerated clear of the field and won "readily" by one and a quarter lengths from
Tosen Ra with Red Cadeaux three and a quarter lengths back in third. After the race Ebina said "I just wanted to get into a good position during the trip, which I managed to do. He had a good first lap which I thought was key. I wasn’t sure what the pace was like; all I was thinking about was keeping the horse in a good rhythm. I was expecting Gold Ship to come and get us at some point but I wasn’t worrying about it. If he passes us, he passes us. My job was to get the most out of my horse." In June Fenomeno dropped back in trip for the 2200 metre
Takarazuka Kinen at
Hanshin Racecourse. He looked to be outpaced in the closing stages but kept on well to take fourth place behind Gold Ship, Danon Ballade and Gentildonna. The colt then had injury problems and did not race again in 2013.
2014: five-year-old season On 29 March, after an absence of over nine months, Fenomeno returned in the Nikkei Sho at Nakayama. He was unable to repeat his success of 2013, but ran creditably to finish fifth of the fifteen runners behind the six-year-old favourite Win Variation, beaten just over three lengths by the winner. On 4 May at Kyoto Fenomeno attempted to become the third horse, after
Mejiro McQueen and
T M Opera O to win consecutive runnings of the spring Tenno Sho and started the 10.5/1 fourth choice in the betting behind
Kizuna, Gold Ship and Win Variation. Admire Rakti, Red Cadeaux and Jaguar Mail were again in the eighteen-runner field but the only other horses to start at less than 50/1 were Desperado (
Kyoto Kinen) and Satono Noblesse (runner-up in the Kikuka Sho). After racing along the inside rail, Fenomeno was switched to the outside to make his challenge in the straight. He took the lead 200 metres out and held on to win in a very tight finish by a neck, a nose and half a length from Win Variation, Hokko Brave and Kizuna. Fenomeno returned on 2 November in the autumn Tenno Sho in which he finished unplaced behind Spielberg. Ebina was replaced as Fenomeno's jockey after this race but the horse showed no improvement in two subsequent starts that year. He came home eighth behind
Epiphaneia in the Japan Cup and then ran unplaced in the
Arima Kinen at Nakayama on 28 December.
2015: six-year-old season On his first and ultimately only appearance as a six-year-old Fenomeno ran for the third time in the Nikkei Sho but made no impression and finished eighth of the twelve runners behind Admire Deus. Fenomeno was supposed to run the Tenno Sho (Spring) once again, but it was announced that the horse would not run the race citing issues with his left forearm, before ultimately being announced that the horse would be retired due to
tendinitis. ==Racing form==