HOT SPRINGS, Ark. – Tyler’s Tribe, the standout Iowa-bred whose magical 2-year-old season lifted the spirits of the young cancer patient he was named for, collapsed and died following a Wednesday workout at Oaklawn Park, trainer Tim Martin told Daily Racing Form. Martin also confirmed a second horse from the barn, Collins, collapsed and died when galloping out after a Thursday work at the track. Both horses were under the same exercise rider who escaped injury, Martin said. Collins was a 3-year-old maiden through six starts who had not yet raced for Martin.   Oaklawn on Thursday announced an investigation is under way and that Martin’s entries over the final three days of the meet that ends Sunday will be scratched. Martin has horses entered in seven races over closing weekend. Oaklawn posted the following statement and provided the post to Daily Racing Form upon request. “The health and welfare of our equine and human athletes are taken very seriously at Oaklawn,” the statement reads. “While management investigates the unfortunate fatalities of Tyler’s Tribe and Collins, trainer Tim Martin’s entries during the last weekend of racing have been scratched by the stewards. In the interest of all parties, Oaklawn must take these actions to properly investigate this matter.”  An official said Oaklawn had no further comment beyond the statement. :: Get the Inside Track with the FREE DRF Morning Line Email Newsletter. Subscribe now.  Martin said in Thursday interview with Daily Racing Form that he welcomes the investigation. He is keeping feed and hay samples to be considered. Martin said he worked 10 horses Thursday and about eight Wednesday. He said in 40 years of training he had only had one horse collapse and die on the track. Tyler’s Tribe, who more than one time had bled through Lasix in a race, was working to get off the veterinarian’s list. The 4-year-old gelding was scheduled to base next at Prairie Meadows in Altoona, Iowa. He breezed in 48.40 seconds on Wednesday. “He was going straight to the test barn to be tested to get off the HISA list,” Martin said. “When they work off the HISA list, you don’t take them to [your] barn. You take the saddle off in the test barn, bathe them there. “He galloped out seven-eighths really strong.” Tyler’s Tribe pulled up without incident, but when he began walking back toward the gap, he collapsed, Martin said. Collins had slightly outworked his company in a three-horse set and collapsed galloping out after a five-furlong work in 1:01.60.   “I’m definitely in shock,” Martin said. “I don’t know what’s going on. I don’t know what to do. Tyler, he’s healthy, big, stout. He looks unbelievable.”   Martin said he was informed by the stewards Thursday that his entries would be scratched. “I said, ‘I’m fine. I want to know what’s going on.’ If there’s something in the feed. I’m saving bags of feed and hay. If something’s there, I want to find out. I’m just devastated by losing Tyler and Collins. Tyler, it’s been tough. It’s just been tough.”   “Hopefully, everything will come back this weekend. We’ll know something. Tyler was insured, so they had to do [exams] anyway.”    Martin co-owned Tyler’s Tribe with Thomas Lepic. The horse won 5 of 10 starts for earning of $327,661. He won four stakes. Tyler’s Tribe won the first five races of his career by nearly 60 lengths in a record that earned him a shot at the Breeders’ Cup Juvenile Turf Sprint. It was his first start without Lasix under required protocols, and he bled. He would later bleed through Lasix in other starts, but he had regularly scoped cleanly after his morning works, Martin said.   “I sent my vet over immediately to check on him” Wednesday, Martin said. “He said, ‘Tim, there’s nothing obvious with this horse at all. No blood. No bleed out.'” Tyler’s Tribe was named for Lepic’s grandson and his supporters as he battled childhood cancer that he became free of just ahead of the Breeders’ Cup. “I told Tom, ‘This horse had a great part in the healing of your grandson,’ ” Martin said. “Every race, he got better and better. This boy, he’s strong now. He’s running in five-mile races. This horse had a big part of a lot of stuff. He was special.” :: Want to learn more about handicapping and wagering? Check out DRF's Handicapping 101 and Wagering 101 pages.