ASCOT, UK--Racing at Ascot this Saturday may focus on the G1 King George VI and Queen Elizabeth S., but a top-class card gets underway in style with the running of the G3 Princess Margaret Keeneland S., a race now in its fifth year of sponsorship by the American sales company. Shannon Arvin, who was appointed Keeneland's eighth president and chief executive officer last year, is the first woman to hold that position, and she arrived in the UK earlier in the week to meet some of the company's clients in...