He won the WPMF Lightweight belt in Thailand in 2007 and returned home to win the South African National Kickboxing Championships the same year.
In 2008, at the age of 18, he won the WMC I-1 Asia Championship title in Hong Kong and was invited to move there permanently to work at the Impakt MMA Academy.
[4][5] Sayed's aggressive approach paid off quickly when he downed Filipino Jessie Rafols with a short left uppercut 1:49 into the first stanza.
On 2 February 2013 Sayed will fight Jumabieke Tuerxun for the third time for the opportunity to win the RUFF 135 lbs belt and be crowned the first ever Chinese National Bantamweight Champion.
On 15 February 2017, Demarte Pena failed a doping test from SAIDS (South African Institute For Drug Free Sport).
On 20 September 2018, WADA have found Pena to be guilty of doping after EFC 66 and sentenced him to a four-year suspension, minus time already served.