Gary Biszantz, who bought his first Thoroughbred for $400 at age 21 in 1956 and was still active in the sport nearly 70 years later, passed away Saturday afternoon after an accidental fall, according to Mike Owens, long-time manager of his Cobra Farm. Owens added that Biszantz's wife, Betty, and six daughters were all with him at the time. Biszantz was 91. Biszantz established Cobra Farm in the 90s, selling it last year after enjoying 480 winners, 32 in stakes and four at Grade I level, and twice went down...