Bob Zollars first owned horses with his partner James Cassels in the late 1990s; now he and wife campaign horses together. Bob Zollars is the co-founder of Huitt-Zollars Inc., an engineering/architectural firm based in Dallas with 14 offices in six states. Cathy Zollars was a teacher, principal and deputy superintendent in the Grand Prairie, Texas, school district. The Zollars own the stakes winner Thiskyhasnolimit, who has won races in four consecutive seasons. They were partners in Fifty Stars and Private Emblem, who both raced in the Kentucky Derby, and some of their other top horses are Real Dandy, Reporting for Duty and Beta Capo.