Xander Schauffele and Max Greyserman are three shots ahead of the field heading into Sunday's final round at the Baycurrent Classic in Yokohama, Japan.
Schauffele carded a four-under 67 in Saturday's third round to catch Greyserman atop the leaderboard at 12 under.
The American made the turn at four under before balancing two bogeys and two birdies in wet weather on the back nine, including a birdie at the par-four 17th to share the clubhouse lead.
With an even-par 71, Greyserman booked a spot in the final pairing for a second straight year after losing by one stroke last year to Colombia's Nico Echavarria.
Echavarria (69) is part of the chasing group at nine under, along with Michael Thorbjornsen (66), South Koreans Byeong Hun An (66) and Si WooKim (69) and South Africa's Garrick Higgo (68).
Greyserman made three birdies to overcome his double-bogey at the par-three seventh hole and a bogey on 11.
