The Zimbabwean international returned to action after spending more than four months on the sidelines nursing an injury.
Brazilians reserve team coach Alex 'Barnes' Bapela also handed midfielder Lebohang 'Cheeseboy' Mokoena a chance in the starting lineup as he also came back from a long-term injury.
Sundowns dominated both halves with Mokoena and Billiat leading the attack. The Chloorkop-based side opened the scoring through Ntandeyenkosi Ngubane in the 16th minute before Billiat added the second in the 20th minute.
Sundowns senior team head coach Pitso Mosimane watched the game from the stands.
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