HERTFORDSHIRE, England -- Due to the threat of localized thunderstorms on Sunday, tee times for the final round of the World Golf Championships-American Express Championship have been moved up.

Players will be sent off the first and 10th tees in threesomes from 9-10:37 a.m. (4-5:37 a.m. ET) with an anticipated finish of 3:30 p.m. (10:30 a.m. ET) if there are no delays.