Sam Hornish Jr. is on the provisional WorldPoints Visa Card Pole for the 90th Indianapolis 500 this afternoon after posting a four-lap average of 228.985 mph. His teammate, Helio Castroneves, is second at 228.008, with Dan Wheldon filling the front row at 227.338. Qualifying continues until 6 p.m. (ET), with 29 drivers already in the field. Saturday, May 20 The Run for the WorldPoints Visa Card Pole on Coca-Cola Throwback DayAdmission: $5.00 Public Gates Open 7 a.m. - 6 p.m. IndyCar Series Practice 9:30 - 11 a.m. Qualifications Noon - 6 p.m. Sunday, May 21 Bump Day/Armed Forces DayAdmission: $5.00...