The Ugandan shot-stopper, who was recently named in CAF's Best XI for 2018, has penned a new four-year deal at Chloorkop.
"Mamelodi Sundowns and Denis Onyango agreed on a contract extension of four and a half years. The Ugandan goalkeeper is currently the best goalkeeper in Africa having been named in the Confederation of African Football’s Best XI," read a club statement.
— Mamelodi Sundowns FC (@Masandawana) February 25, 2019
Onyango, 33, has won three Absa Premiership titles, the CAF Champions League and the CAF Super Cup since joining the club from Mpumalanga Black Aces in 2011.