CHICAGO - Guillaume Tell is coming to Arlington Park as the strong favorite for Saturday's Arlington Classic, but the man who helped engineer his purchase will be nowhere near Chicago. Barry Irwin, one of the principals in Team Valor, which owns Guillaume Tell, is half a world away in South Africa, where one of Team Valor's stars, the 3-year-old filly Irridescence, is running in the Group 1 Durban July at Greyville Racecourse.