Di Resta, who has been promoted from his role as reserve driver, did not improve on that time, and endedtheday 10th fastest out of 11 runners after a trip into the gravel at Turn Nine.
Wall Street endedtheday up more than 1% but the biggest winner among our real time billionaires was once again the richest person on the planet, Carlos Slim Helu.
That chasing trio endedtheday tied for second on 10-under 206, two shots clear of three-time major winner Harrington (67) and Ryder Cup winner Francesco Molinari (68).