Miguel Tabuena endured a rollercoaster round and held on to a share of the lead for the third-straight day in the Queen's Cup in Thailand.
The 17-year-old Tabuena, bogeyed the par-4 hole No. 1 at Santiburi Samui Country Club for the third-straight day and needed some clutch shotmaking again in the closing holes for a 72 that put him in a four-way logjam at the top of the leaderboard.
After sharing the first-round lead with a 67 and holding on to the top after a 70, Tabuena is now at four-under 209, which was matched by overnight co-leader Thaworn Wiratchant of Thailand, Siddikur Rahman of Bangladesh, and Varut Chomchalam also of Thailand.
Tabuena quickly recovered with a birdie on the second hole and managed to keep pace with Thaworn, who briefly took the lead with back-to-back birdies to close the front nine.
Thaworn, a 12-time Asian Tour winner, threatened to pull away with another pair of birdies on the 12th and 13th that moved him to eight under but faltered with two bogeys and a double bogey on the final five holes for a 72.
The teenage Filipino, meanwhile, somehow managed to quickly regain what he lost -- he sandwiched a double-bogey on the par-3 No. 15 with birdies on the 14th and 16th.
Rahman had an even par-71 and Chomchalam had the day's best 66.
Juvic Pagunsan was in solo 10th place after a third-round 72 for a one-under 212 total, Mars Pucay was in joint 15th (214) after a 68, Antonio Lascuna had a 72 and was joint 22nd (216) and Angelo Que carded a 73 for a share of 33rd place (218).