Atta Boy Roy took trainer Valorie Lund all the way to the 2010 Breeders&rsquo; Cup Sprint at Churchill Downs, and now a 2&#45;year&#45;old son of Atta Boy Roy named Mr. Jagermeister could make life interesting again for Lund. Two&#45;year&#45;old Mr. Jagermeister faced Minnesota&#45;breds making his career debut July 4 at Canterbury Park, and it wasn&rsquo;t a fair fight. Despite breaking a step slowly and trailing the field two strides into the race, Mr. Jagermeister opened a big lead around the turn and only increased his advantage while going comfortably to the wire. He won by 11 1/2 lengths, ran five furlongs in just more than 58 seconds, and got an 82 Beyer Speed Figure, among the top 2&#45;year&#45;old numbers this year in North America.Put it all together and Mr. Jagermeister seems likely to go postward well south of his morning&#45;line 9&#45;2 odds Friday night at Prairie Meadows in the $65,000 Prairie Gold Juvenile. And if Mr. Jagermeister does wind up at 9&#45;2, a bet is in order. The Prairie Gold Juvenile, contested at six furlongs, is the eighth of nine races Friday with post time scheduled for 9:12 Central.KEY CONTENDERSMR. JAGERMEISTER, by Atta Boy RoyBeyer: 82◗ Debuted in blinkers and looks like a pure speed horse, but he should at least stay the six furlongs of the Prairie Gold Juvenile under jockey Andrew Ramgeet, who was aboard first out.◗ He&rsquo;s well drawn in post 8, from which Ramgeet can survey the actions of the other speed horses and ride accordingly. A bullet half&#45;mile drill July 21 suggests Mr. Jagermeister still is sharp.◗ While Mr. Jagermeister only beat Minnesota&#45;breds, the horse who finished a distant second behind him, Bryson&rsquo;s Confession, returned to win a Minnesota&#45;bred maiden sprint by two lengths. HARDWORKCLEANLIVN, by Colonel JohnBeyers: 62&#45;73◗ Exits the strongest race of any horse in the Prairie Gold Juvenile, having finished a distant but troubled third June 30 in the Bashford Manor at Churchill Downs. Ten City and Copper Bullet, the two in front of him, rank among the top summer 2&#45;year&#45;olds in the country. ◗ He is bred to run two turns on turf, but his debut win came over 4 1/2 furlongs at Lone Star, and Hardworkcleanlivn is quick.THE TABULATOR, by Dialed InBeyer: 62◗ The good news is The Tabulator absolutely aired in his lone start, a July 2 maiden dash at Arlington. The bad news is that race came on Polytrack, not dirt, and The Tabulator had only two rivals.◗ Arlington&rsquo;s leading jockey, Jose Valdivia Jr., is named to ride for trainer Larry Rivelli, who hasn&rsquo;t started a horse at Prairie Meadows since 2010.