Tapei: Thai star Thaworn Wiratchant rushed to see a doctor after suffering irregular heartbeats and trembling hands during his second round at the Yeangder Tournament Players Championship (TPC) in Taipei Friday.
The defending champion shot a 69 to lie two shots off the lead on five-under par despite not feeling himself on the par-72 Linkou International Golf and Country Club.
"I was shaking during the round so I went to see the doctor after submitting my scorecard," the 47-year-old said in comments released by the organisers.
"The doctor said everything was okay and she explained that it might have been stress. Hopefully I feel better tomorrow," added Thaworn, a two-time winner of the event.
The Thai veteran is joint fourth, behind leaders Antonio Lascuna and Cameron Smith who are on seven-under.
Lascuna, from the Philippines, holed a crucial 10-foot birdie putt on the 18th as he bids for a first Asian Tour title, while Smith signed for a 67 and a halfway score of 137.
"My putting was really good. I managed to save a lot for pars. It`s not easy to putt here so I`m very pleased with my performance so far," Lascuna said.
Taiwan`s Lien Lu-sen scored a 71 to lead the local charge and sits just one shot back.
India`s Anirban Lahiri fired the lowest round of the day -- a six-under-par 66 -- to lie tied in fourth with Thaworn and two others.
Overnight leader Elmer Salvador struggled to a 74 after his opening-round 66.
Leading scores after round two (par 72):
137 - Antonio Lascuna (PHI) 68-69, Cameron Smith (AUS) 70-67
138 - Lien Lu-sen (TWN) 67-71
139 - Anirban Lahiri (IND) 73-66, Daniel Chopra (SWE) 71-68, Angelo Que (PHI) 68-71, Thaworn Wiratchant (THA) 70-69
140 - Lin Wen-tang (TWN) 70-70, Prom Meesawat (THA) 67-73, Ryan Yip 71-69, Gunn Charoenkul (THA) 69-71, Elmer Salvador (PHI) 66-74.