Answer by taking a quote from the following article:

Secretariat (March 30, 1970 - October 4, 1989) was an American Thoroughbred racehorse who, in 1973, became the first Triple Crown winner in 25 years. His record-breaking win in the Belmont Stakes, where he left the field 31 lengths behind him, is widely regarded as one of the greatest races of all time. During his racing career, he won five Eclipse Awards, including Horse of the Year honors at ages two and three. He was elected to the National Museum of Racing and Hall of Fame in 1974.

Secretariat raced in Meadow Stables' blue-and-white-checkered colors. He never raced in track bandages, but typically wore a blinker hood, mostly to help him focus, but also because he had a tendency to run in towards the rail during races. In January 1972, he joined trainer Lucien Laurin's winter stable at Hialeah. Secretariat gained a reputation as a kind horse, likeable and unruffled in crowds or by the bumping that occurs between young horses. He had the physique of a runner, but at first was awkward and clumsy. He was frequently outpaced by more precocious stable mates, running a quarter-mile in 26 seconds compared to 23 seconds by his peers. His regular exercise riders were Jim Gaffney and Charlie Davis. Davis was not initially impressed. "He was a big fat sucker", Davis said. "I mean, he was big. He wasn't in a hurry to do nothin'. He took his time. The quality was there, but he didn't show it until he wanted to." Gaffney though recalled his first ride on Secretariat in early 1972 as "having this big red machine under me, and from that very first day I knew he had a power of strength that I have never felt before ..."  Groom Eddie Sweat was another important member of the Secretariat team, providing most of the daily hands-on care. Sweat once told a reporter, "I guess a groom gets closer to a horse than anyone. The owner, the trainer, they maybe see him once a day. But I lived with him, worked with him."  Laurin sent Chenery regular updates on Secretariat's progress, saying that the colt was still learning to run, or that he still needed to lose his baby fat. Chenery recalled that when Secretariat was in training, Lucien once said: "Your big Bold Ruler colt don't show me nothin'. He can't outrun a fat man." But Secretariat made steady progress over the spring. On June 6, he wore blinkers for the first time to keep his attention focused and responded with a half-mile workout in a solid 47 3/5 seconds. On June 24, he ran a "bullet", the fastest workout of the day, at 6 furlongs in 1:12 4/5 on a sloppy track. Laurin called Chenery at her Colorado home and advised her that Secretariat was ready to race.  The 1973 Kentucky Derby on May 5 attracted a crowd of 134,476 to Churchill Downs, then the largest crowd in North American racing history. The bettors made the entry of Secretariat and Angle Light the 3-2 favorite, with Sham the second choice at 5-2. The start was marred when Twice a Prince reared in his stall, hitting Our Native, positioned next to him, and causing Sham to bang his head against the gate, loosening two teeth. Sham then broke poorly and cut himself, also bumping into Navajo. Secretariat avoided problems by breaking last from post position 10, then cut over to the rail. Early leader Shecky Greene set a reasonable pace, then gave way to Sham around the far turn. Secretariat came charging as they entered the stretch and battled with Sham down the stretch, finally pulling away to win by  2 1/2 lengths. Our Native finished eight lengths further back in third.  On his way to a still-standing track record of 1:59 2/5, Secretariat ran each quarter-mile segment faster than the one before it. The successive quarter-mile times were :25 1/5, :24, :23 4/5, :23 2/5, and :23. This means he was still accelerating as of the final quarter-mile of the race. No other horse had won the Derby in less than 2 minutes before, and it would not be accomplished again until Monarchos ran the race in 1:59.97 in 2001.  Sportswriter Mike Sullivan later said:  I was at Secretariat's Derby, in '73 ... That was ... just beauty, you know? He started in last place, which he tended to do. I was covering the second-place horse, which wound up being Sham. It looked like Sham's race going into the last turn, I think. The thing you have to understand is that Sham was fast, a beautiful horse. He would have had the Triple Crown in another year. And it just didn't seem like there could be anything faster than that. Everybody was watching him. It was over, more or less. And all of a sudden there was this, like, just a disruption in the corner of your eye, in your peripheral vision. And then before you could make out what it was, here Secretariat came. And then Secretariat had passed him. No one had ever seen anything run like that - a lot of the old guys said the same thing. It was like he was some other animal out there.  Secretariat next went to Saratoga, popularly nicknamed "the graveyard of champions", in preparation for the Whitney Stakes on August 4, where he would face older horses the first time. On July 27, he put in a stunning workout of 1:34 for a mile on a sloppy track, a time that would have broken Saratoga's track record. On race day though, he was beaten by the Allen Jerkens-trained Onion, a four-year-old gelding who had set a track record at  6 1/2 furlongs in his previous start. The track condition for the Whitney was labelled fast but was running slow, especially along the inside rail. Secretariat broke poorly and Onion led from the start, setting a slow pace running well off the rail. Down the backstretch, Turcotte chose to make his move along the rail rather than sweeping wide. Secretariat responded more sluggishly than usual and Turcotte went to the whip. Secretariat closed to within a head on the final turn before Onion pulled ahead in the straight to win by a length. A record crowd of more than 30,000 witnessed what was described as an "astonishing" upset.  Despite Jerkens's reputation as the "Giant Killer," Secretariat's stunning loss can possibly be attributed to a viral infection, which caused a low-grade fever and diarrhea. "I was learning then that anything could happen in horse racing", said Chenery. "We knew he had a low-grade infection. But we decided he was strong enough to win anyway, and we were wrong."  Secretariat lost his appetite and acted sluggishly for several days. Charles Hatton wrote: "He seemed distressingly ill walking off, and he missed the Travers. Returned to Belmont to point for the $250,000 Marlboro, the sport's pin-up horse looked bloody awful, rather like one of those sick paintings which betoken an inner theatre of the macabre. It required supernatural recuperative powers to recover as he did. He was subjected to four severe preps in two weeks. Astonishingly, he gained weight and blossomed with every trial."

Did he have any other losses?