Huston fired a 6-under-par 66 in his third event as a senior tour member, recording seven birdies and a bogey at Prestonwood Country Club to join the other two for the lead at 9-under 135.
Perry, who started the day with a three-shot lead, and Price each recorded 3-under 69s Saturday.
It was rough day for first-round leader Corey Pavin, who tumbled to 5-under thanks to a 2-over 74.
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