UPDATE 2-Kerr leads by two heading into last round of U.S. Open

* Kerr shoots 72 to lead by two going into final round

* South Korea's Ji in second place after posting 70

* Triple-bogey drops Creamer from leaderboard

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By Larry Fine

BETHLEHEM, Pennsylvania, July 11 (Reuters) - American Cristie Kerr held firm in testing conditions on Saturday to shoot a one-over-par 72 for a two-stroke lead going into the final round of the U.S. Women's Open.

Kerr, the 2007 champion, stood at two-under 211 and was the only player under par through 54 holes at Saucon Valley Country Club's Old Course.

South Korean Ji Eyun-hee shot a sizzling 32 on the back nine, notching birdies on the 10th, 14th and 17th holes to complete a one-under-par 70 for level-par 213.