Career
A graduate of Bukit Jalil Sports School, Mohd Shazlan Alias was part of the Malaysian under-18 squad that was at that time under K. Rajagopal that competed at the Association of Southeast Asian Nations Football Championship Under-20 in Vietnam on July 2007. Despite intense competition with Mahali Jasuli for the right back position, Shazlan performances were outstanding enough to allow him to remain with the Harimau Muda squad that was at that time competing in the 2008 Malaysia Premier League. Shazlan later played for his home state Terengganu for the 2009 edition of the Malaysia Super League but later moved to its feeder club T–Team after only one season to gain more first-team experience.
After two seasons with T-Team, Shazlan accepted an offer to play for Sime Darby.
He return to T-Team after the final playing for them for one season. Shazlan decide to join Selangor FA for the 2014 Malaysia Super League.