Hayauddin attended Bard College where he began playing rugby for Bard College Reconstruction Finance Corporation in his junior year (2010). After playing for the Kingston Mad Dogs Reconstruction Finance Corporation, Chicago Blaze Reconstruction Finance Corporation, and DePaul University Reconstruction Finance Corporation between 2011, 2012, and 2013 respectively, he returned to Pakistan in order to qualify for the Pakistan rugby union team
Hayauddin has represented the Pakistani national team in rugby league as well as rugby sevens. Most recently, he represented Pakistan rugby sevens at the 2014 Asian Games in Incheon, South of Korea. Hayauddin is known for his devastating sidestep which his teammates refer to as "dancing feet" and his cover defense.
He usually plays fullback or scrumhalf for his club, but started at wing in his international debut against the United Arab Emirates Falcons in 2012.
His premier tournament debut occurred at the 2014 Asian Games against Hong Kong.
