Harness Racing This Week: Blue Chip Matchmaker and MGM Borgata Pacing series fourth legs, MGM Yonkers Raceway, Yonkers, N.Y. This is the opening event of the 2024 Grand Circuit season. Schedule of events: The Grand Circuit at Yonkers features two $40,000 divisions on Friday (April 5) in the fourth round of the Blue Chip Matchmaker series