SUMMERSIDE, PE – The Atlantic Region’s top three-year-old pacers will converge on Red Shores Summerside Raceway on Sunday afternoon as the Lady Slipper Stakes and Joe O’Brien Memorial headline a stakes-filled 11-dash program. First race post time is 1 P.M. The Lady Slipper Gold divisions for three-year-old pacing fillies headline the program, starting in race 5 with a $25,250 purse. The Joe O’Brien Memorial also has two rich $32,800 Gold divisions for three-year-old pacing colts. The Lady Slipper Stakes for three-year-old pacing fillies kicks off in race 1 with a $12,625 Grassroots division followed by another split in race 7.