U R Burnin Daylite, who has emerged as the top 3-year-old sprinter at the young meeting, will be looking to ration his speed over 1 1/16 miles in Saturday’s Harry Jeffrey at Assiniboia Downs. The $30,000 Harry Jeffrey is situated as the major local prep for the $75,000 Manitoba Derby, which will be run on Aug. 1, and a field of 12 has been entered.U R Burnin Daylite, one of three horses in the Harry Jeffrey trained by Ardell Sayler, opened his campaign with a front-running win under first-level allowance terms at five furlongs on May 11. Five weeks later, U R Burnin Daylite showed the way at 18-1 in the Golden Boy, scoring by 1 1/2 lengths over six furlongs of muddy going.Jocelyne Kenny has picked up the mount on U R Burnin Daylite, who drew post 10 and is the 122-pound highweight.Pulgarcito was a closing second in the Golden Boy and will be looking to turn the tables under jockey Tyrone Nelson. Trained by Murray Duncan, Pulgarcito also will be traveling beyond six furlongs for the first time and drew the outside post.Gotatigerbythetail, Back of the Bus, and O K Indy finished 1-2-3 when running under first-level allowance terms in a one-mile race on June 29.Also trained by Sayler, Gotatigerbythetail scored by 3 1/2 lengths. He will have a new rider in Janine Stianson as he starts from post 5.Back of the Bus won a minor stakes over one mile at Portland Meadows this March and was making his first start in more than two months and first over the Winnipeg oval in the allowance race. Gustavo Ortiz rides Back of the Bus, who will begin from post 9.O K Indy came from left field to win his debut in a $5,000 maiden claimer on June 11, but he was closer to the pace in his second start, which came in the June 29 allowance. He rallied to be beaten 1 1/4 lengths for the runner-up spot. Perry Winters retains the mount on O K Indy, who goes from post 8.Waronthehomefront, the other Sayler trainee, is adding blinkers after finishing fourth in the Golden Boy.