Four-time Grade I winner McKinzie (Street Sense--Runway Model, by Petionville) has been retired from racing and will stand stud at Gainesway in 2021, the farm announced Wednesday evening. "McKinzie was absolutely brilliant. He was an undefeated Grade I winner at two, as well as a multiple Grade I winner and top-rated horse at three and four years of age," Brian Graves, General Manager of Gainesway, said. "His speed, precocity and good looks make him an absolute standout." Purchased by Karl Watson, Michael Pegram and Paul Weitman for $170,000 at Keeneland...