LOUISVILLE, Ky. (AP) -- The unbeaten horse stumbled out of the gate. The reluctant hero kept his cool. "Good horses make good riders and good horses make good trainers," Michael Matz said. They also make good stories, and this certainly is one. A hard-charging Barbaro galloped into the lead at the top of the stretch and won the Kentucky Derby by a stunning 6� lengths Saturday, giving Matz his first Derby victory and jockey Edgar Prado his first winning ride. The trainer's joyous day came nearly 17 years after he led three children to safety within minutes after United Airlines flight 232 from Denver to Chicago cartwheeled down a runway, caught fire and skidded to a stop in an Iowa cornfield. The two brothers and their sister, now grown, joined Matz in the grandstand at Churchill Downs, where they cheered the strapping bay colt onto his sixth consecutive win. "There's always anxious moments, but Edgar's ridden him beautifully every time," Matz said. Given a masterful ride by Prado, the Barbaro beat a full field of 20 3-year-olds -- considered one of the toughest in years. With Sinister Minister and Keyed Entry setting the pace, Barbaro settled in right outside the leaders after his brief stumble out of the No. 8 gate. He made his powerful move around the far turn, just as he had in winning his first five races. And even though he was making only his first start in five weeks, the Florida Derby winner had plenty left in the tank as he lengthened his lead over runner-up Bluegrass Cat and helped Prado into the winner's circle on his seventh try. After the horse righted himself after the stumble, Prado said, "I was very confident and it was just a matter of time when I could turn him loose. And when I turned him loose, he was like a rocket. "I didn't have any doubt about the kind of horse he is." Steppenwolfer was third, and there was a dead heat for fourth between Brother Derek and Jazil. Barbaro became the sixth undefeated winner, following Smarty Jones in 2004. Trainer Bob Baffert had three horses in the field, but failed in his attempt to win his fourth Derby: Point Determined was ninth, Sinister Minister was 16th and Bob and John was 17th. Sent off as the 6-1 second choice by the crowd of 157,536 -- the second largest in Derby history -- Barbaro covered the 11/4 miles in 2:01.36, well off Secretariat's record of 1:59 2/5 in 1973. The margin of victory was the largest since Assault won by a record-tying eight lengths in 1946. There other Derby winners won by eight lengths. The son of Dynaformer, owned by Gretchen and Roy Jackson's Lael Farm, returned $14.20, $8 and $6. Bluegrass Cat, trained by Todd Pletcher, returned $28.40 and $15.40. Steppenwolfer paid $7.80 to show. Showing Up was sixth, followed by Sweetnorthernsaint, the surprise 5-1 favorite, Deputy Glitters, Point Determined, Seaside Retreat, Storm Treasure, Lawyer Ron, Cause to Believe, Flashy Bull, Private Vow, Sinister Minister, Bob and John, A.P. Warrior, Sharp Humor and Keyed Entry. Barbaro earned $1,453,200 to boost his career earnings to $2,302,200. If Barbaro goes on to win the Preakness in two weeks, the stage would be set for a fourth Triple Crown try in the past five years at the Belmont Stakes on June 10. War Emblem in 2002, Funny Cide in '03 and Smarty Jones in '04 each won the Derby and Preakness, but came up short in the last race. "He's a very nice horse," Prado said, "and hopefully we can win a Triple Crown." All week, Matz patiently answered questions about the crash of the DC-10 that killed 111 of the 296 passengers and crew members. He led the two brothers and their sister, who were traveling without their parents, away from the burning wreckage. D.D. Alexander, Matz's fiancee at the time and now his wife, also survived and the two stayed with the children until their parents arrived.
 He's a very nice horse, and hopefully we can win a Triple Crown. -- Barbaro jockey Edgar Prado
Matz and another passenger then went back inside the plane after hearing the cries of a baby and pulled the infant out of a luggage compartment. "I think Michael is one of those rare people who does amazing things and doesn't showboat or take a lot of credit," Melissa Radcliffe, now 29 and one of the children Matz saved, said earlier this week. "In the plane crash, we knew him but we had no idea he was an Olympic equestrian rider. He said he was just a guy who likes horses." The 55-year-old Matz was an equestrian show jumping superstar for years before turning to training, competing in three Olympics between 1976 and 1996 and carrying the U.S. flag at the closing ceremony in Atlanta. Matz left the sport in 2000 as show jumping's all-time money leader with $1.7 million, and was inducted into show jumping's Hall of Fame on April 1 -- the same day Barbaro won the Florida Derby. Until Barbaro came around, Matz' best horse was Kicken Kris, who won 2004 Arlington Million. Matz t