[10] Besides that, in 1976, he also helped the Penang side to won the Aga Khan Gold Cup international tournament held in Dhaka.

[11] He was a prolific striker and formed a deadly combination with Mokhtar Dahari when both them scored 16 goals for national team in 1976.

[13] On 11 May 1975, Isa is also part of the Malaysia Selection that played against Arsenal FC in a friendly match which his team won by 2-0 at Merdeka Stadium.

[14][15] Later, He scored 1 goal which ended in a 1–1 draw against Arsenal in a second match at his Penang home ground, City Stadium.

[18] On 17 February 2022, IFFHS selected him on their list of Men’s All Time Malaysia Dream Team.