Kingston and Orr lead the field with a 10-under 200 for the tournament with the final round on tap Sunday.
Kingston double-bogeyed the first hole Saturday but kept his head above water the rest of the round with a birdie on the seventh hole and five birdies on the back nine. Orr also carded five birds along with a bogey on No. 9.
Second-round leader Simon Dyson turned in a 71 to take a share of fourth place at eight-under 202. Rory McIlroy battled his way to a 68 and was in eighth place at seven-under for the tournament.