One of Malaysia's longest-standing badminton partnerships has officially come to an end, as Ong Yew Sin and Teo Ee Yi go their separate ways after nearly a decade together closing a chapter defined by consistency, resilience, and elite level performances.
Formed in 2015, the pair became a mainstay in Malaysia's independent men's doubles circuit, regularly competing against the world's best and delivering strong results across the BWF World Tour.
They were active together from 2015 to 2026, competing in over 110 tournaments and playing more than 230 matches on the international circuit. During this period, they registered upwards of 135 victories, maintaining an impressive win rate of around 58-60%. The pair reached over 10 finals and secured three BWF World Tour titles, while also climbing to a career-high world ranking of No. 6. Their standout achievement came at the 2021 BWF World Championships, where they clinched a bronze medal, marking the peak of a long and consistent partnership.
Their most defining moment came at the 2021 BWF World Championships in Huelva, where they secured a bronze medal cementing their reputation as one of Malaysia's most dependable pairs on the global stage.
The split became evident when Ee Yi entered the upcoming Thailand Open (May 12-17) with a new partner, Chia Wei Jie. The move also coincides with his switch to a new sponsor, Felet, signalling the beginning of a new phase in his career.
Meanwhile, Yew Sin, 31, will not feature in the tournament and is actively exploring options for a new partnership. Among the possibilities is a link-up with Lwi Sheng Hao, which could reshape Malaysia's independent doubles landscape further.
In recent seasons, the duo experienced fluctuating form, with fewer deep runs in top tier tournaments despite maintaining a competitive win rate. However, their longevity spanning over 200 matches together and their ability to challenge elite pairs ensured their status as one of the most respected combinations in Malaysian badminton.
Their separation marks more than just a partnership ending it reflects a broader transition phase within the sport, where new pairings and tactical resets are becoming increasingly common.
As the Thailand Open approaches, focus will shift to how quickly Ee Yi adapts to his new partnership, while Yew Sin's next move remains one of the key storylines in Malaysia's evolving men's doubles scene