Making just his third start in this country, Mufasa (Chi) (Practical Joke) backed up his big-figure victory at Colonial Downs earlier this summer with an impressive performance in Saturday's 'Win and You're In' GIII Vosburgh Stakes at the Big A. Favored at 8-5 here, he traveled nicely in second through an opening quarter in :23.13, took over approaching the quarter pole and punched home with authority to defeat Scotland (Good Magic) by 4 1/4 lengths. Mufasa, an eight-time winner from 10 starts in his native Chile, including last year's G3...