Turf and dirt, trainer Steve Asmussen has live sprinters Sunday at Sam Houston. Share the Upside can win the $100,000 Pulse Power Turf Sprint over five furlongs, while Nitrous, the 8-5 morning-line favorite, will be tough to beat in the $75,000 Stonerside Sprint over six furlongs on dirt. :: Start earning weekly cashback on your wagering today. Click to learn more. Share the Upside is a 6-year-old with 20 starts but only three have come on turf, where this gelding is undefeated. Granted, there were no international stars in the Lone Star and Remington grass-sprint allowance races Share the Upside won this past summer, but Share the Upside appeared to grow more comfortable and confident as he became accustomed to grass racing. Away from racing between Sept. 27 and Dec. 19, Share the Upside returned in an open dirt allowance at Remington, where he finished second by less than one length to the legendary Oklahoma-bred sprinter Welder. Share the Upside since has worked four times at Sam Houston and should be set for a top performance under Stewart Elliott. Fast Boat finished second in Pulse Power Turf Sprint’s 2020 renewal, but is asked to run back just two weeks after finishing fourth in the Duncan Kenner at Fair Grounds. Carotari rates a long look at a fair price. He ran two turf sprints early in 2020 good enough to win on Sunday. Nitrous hit peak form late in 2020, most recently winning the Thanksgiving Classic at Fair Grounds by 1 1/2 lengths over the good sprinter Manny Wah. Since then, Nitrous has been all dressed up with nowhere to run, with Asmussen entering him in the Duncan Kenner hoping for a rain-off onto dirt that didn’t happen. He must deal with post 1 Sunday but appears to have a meaningful edge on all his rivals save, perhaps, Hollis. Hollis, a $50,000 claim last May, most recently finished a brave third Dec. 19 at Fair Grounds in a turf-sprint stakes won by the Asmussen-trained Archidust. The John Ortiz-trained Hollis can handle turf but might well be better on dirt, and is well drawn on the outside of a nine-horse field. ◗ A barn change and five-month layoff might make Catch a Bid a 7-5 morning-line favorite worth opposing in the $75,000 Jersey Lily, the last race on the Sunday card. Morning Molly and Stunning Sky are the logical alternatives, but a deeper dig could be rewarded with a long-priced winner.