Tapit, the most successful sire in the modern history of the Belmont Stakes and looking to secure the race’s sire record outright this weekend, wouldn’t be here without him. Neither would Quality Road, sire of Preakness Stakes winner National Treasure. And nor would four-time reigning leading sire Into Mischief, who will have Kentucky Oaks winner Pretty Mischievous in action this weekend at Belmont Park.