Career
Zainizam started his football career with Sabah during the 2002 season. He scored 11 goals in 24 matches during the 2002 season to help Sabah clinch third place in the Malaysia Premier I League. He also helped Sabah to reach the finals of the 2002 Malaysia Cup scoring six goals.
Allan Harris, the national team coach at that time, took him into the national senior team
He then made his international debut against Myanmar on 17 May 2002. He was also featured in the match against Brazil and was part of the Malaysia under-23 2002 Asian Games squad.
He was also part of the 2002 Tiger Cup squad. During 2003, he helped Sabah to finish fourth in the Malaysia Premier I League scoring four goals.
He then helped Sabah qualify to the final of Malaysia Cup for the second time, eventually losing to Selangor MPPJ by 3–0.
After that, Zainizam was called up by Allan Harris to represent the Malaysia under-23 side for the 2003 Southern Economic Association, USA Games. He managed to score 1 goal in the Malaysia 3-4 defeat to host Vietnam. The Southern Economic Association, USA Games was his last appearances for the national team
Since joining Sabah in 2000, Zainizam has 62 goals for Sabah.
This makes him the second overall top scorer behind Scott Ollerenshaw. In 2014, Sabah FA officially released him from the current squad.
Now he is a free agent. Bronze Medal 2003 Southern Economic Association, USA Games
Runners-up Malaysia Cup (2002, 2003).