Kuwait claimed their first Asian Games athletics gold medal on Wednesday as Fawzi Al-Shammari won the 400m.
Al-Shammari narrowly beat Saudi Arabia's Hamdan O Al-Bishi by 0.02 seconds, equalling the Games record of 44.93.
Sri Lanka's Rohan Pradeep Handunpurage took bronze.
Both runners have been on top form this season, but Wednesday's victory means Al-Shammari has now beaten his Saudi rival in their last three races.
"I beat him at the line in March this year and I was lucky to be able to do it again here," said Al-Shammari, who followed his victory by running in the 200m heats to reach Thursday's final.
"Running the 200 heats after the 400 on the same day was a problem but I managed to conserve enough energy.
"The 400 is my specialist event. The 200 will be a bonus, but I still want a medal."
South Korea won the men's team badminton gold medal 3-1 after opponents Indonesia staged a two-hour boycott.
Indonesia's first player, Taufik Hidayat, stormed off court in protest over line calls that team manager Christian Hidayat called unfair and biased.
Indonesia's only point came from a doubles victory.
In boxing, Jordanian heavyweight Yousef Hasan lost his quarter-final against the hosts' Lee Hyun-Song by three points.
And South Korea's Baik Jong-Sub won his lightweight quarter-final bout against Thailand's Sayota Pichai when the fight was stopped in the second round.
Meanwhile, Kim Jong-Kook drove in the tying run in the fourth inning as South Korea went on to beat Taiwan 4-3 in the baseball final.
Elsewhere, Hong Kong won their fourth gold medal of the games when Lee Lai-shan took windsurfing gold, while China captured the men's and women's table tennis singles titles.
Table tennis world champion Wang Liqin beat Taiwan's Chuang Chih-yuan 11-4 12-10 13-11 11-7 for the men's gold.
In an all-Chinese women's final, Zhang Yining defeated Wang Nan 11-7 11-6 7-11 12-14 11-8 6-11 11-9.
In tennis, Thailand's Paradorn Srichaphan needed only 35 minutes to advance to the men's quarter-finals with a 6-0 6-2 victory over Tajikistan's Sergei Makashin.
Tamarine Tanasugarn reached the women's semi-finals with a 7-6 (7-5) 6-4 victory over South Korea's Jeon Mi-ra.
In athletics, China's Gau Shuying won the women's pole vault by clearing 4.35m and Li Meiju won the women's shot put.
Liu Xiang won the men's 110m hurdles.
In field events, Saudi Arabia's Salem al-Ahmadi won the triple jump, with 16.60m to 16.57m by China's Lao Jianfeng.
Qatar's Khamis Abdulla Saifeldin beat Japan's Yoshitaka Iwamizu by 1.2 seconds in the 3,000m steeplechase, and Bahrain's Rashid Mohamed won the men's 800m.
Thailand finished with five of the six gold medals in sepak takraw, an acrobatic form of volleyball in which use of the hands is barred.