Singapore swimmers Quah Zheng Wen, Lionel Khoo, Joseph Schooling and Darren Chua won the country's 50th gold at the Southeast Asian (SEA) Games on Dec. 9 night, coming in first at the men's 4x100m medley relay.

However, the Philippines men's team, who were expected to medal at the race, unexpectedly got disqualified during the event.

Butterfly swimmer rage quit after cap and goggles came loose

During the relay, the swimmers from Philippines had consistently held onto the third spot.

They overtook the Indonesian team to trail behind Singapore as Jarod Hatch, the Philippines butterfly swimmer plunged in 2.65 seconds after Schooling.

However, Hatch abruptly stopped in the middle of the race, pulling off his swimming cap and goggles.

The swimmer looked visibly furious as he threw his cap, after he accidentally employed a breaststroke kick to regain momentum, which likely disqualified his team from the race.

According to FINA rules, breaststroke kicking movements are not permitted when swimming with the butterfly stroke.

Indonesia claims silver, Vietnam gets bronze

After the Philippines medal contenders were disqualified, Indonesia moved back up to second place while Vietnam caught up to bag a bronze medal from the relay.

Singapore finished with a time of 3:38.63, 4.64 seconds ahead of Indonesia, and won a total of 23 golds from the 2019 edition of the SEA Games swimming meet.

Top image via WAKIL KOHSAR/AFP via Getty Images