Saffie Joseph Jr. may be 1,400 miles away overseeing his “A” string at Saratoga, but his presence will continue to remain a threatening one nonetheless this summer at Gulfstream Park. Saturday, the meet’s leading trainer sends out horses in eight of the 11 races on the card, including a pair of key contenders in the afternoon’s two main events, the $75,000 Game Face for 3-year-old fillies and the $75,000 Powder Break, which lured an evenly matched field of 11 older fillies and mares on turf.