4th-SA, $65K, MSW, 3yo, f, 6f, 5:32 p.m. QUICK BROWN FOX (Justify), the first foal out of MGISW Bast, debuts Saturday for owner/breeder Spendthrift Farm and trainer Richard Mandella. Spendthrift went to $4.2m, a top-four price, at FTKNOV in 2020 for the daughter of Uncle Mo who earned over $850,000 on the track for trainer Bob Baffert. Bast herself is out of $1.5m Eaton Bloodstock broodmare buy Laffina (Arch) and the family has plenty of graded-stakes caliber runners led by GISW and $1.2m FTKNOV broodmare Fault (Blame) and SW/MGSP South...