8th-Gulfstream, $70,000, Msw, 1-14, 3yo, 1m, 1:39.18, ft, 1 3/4 lengths. KINGSBARNS (c, 3, Uncle Mo--Lady Tapit {GSP}, by Tapit), an $800,000 2-year-old purchase by Spendthrift Farm out of the Gulfstream Sale last year, rewarded his backers as the 3-1 favorite in his debut start. Fourth in the early going while racing a path off the rail, Kingsbarns began to inch up into the far turn and found racing room between rivals as the top trio straightened into the lane. Game Warden (Tapit) closed with a run to be second...