Koo and Tan should learn from the Sidek brothers. Razif and Jalani Sidek were not on good terms with each other during their playing days, but always put their differences aside during training and in competition. Why was why, despite lacking attacking power and over-reliance on defence, the Sidek brothers were among the top 4 MD pairs in the world then for a very long time.
Ah..the good old days when the Sidek brothers were a fearsome lot, together with Park Joo Bong/Kim Moon Soo, Li Yongbo/Tian Bingyi, Edi Hartono/Rudy Gunawan.