Zambri, Spike McRoy and Tim Clark are all tied for the top spot at 9-under in Boise, Idaho. Zambri, who began the day with a three-shot lead, shot a 1-under 70 at the Hillcrest Country Club. McRoy and Clark each carded a pair of 4-under-par 67s.
McRoy and Clark are each seeking their second wins of the 2000 season. McRoy captured the 2000 Dakota Dunes Open, while Clark won four weeks ago at the Fort Smith Classic.
Zambri, currently 47th on the money list, is in search of victory No. 1 on the 2000 campaign.