The Nedbank Cup Round of 16 takes centre stage this week and six former winners are among the 16 sides looking to take a step closer to lifting the trophy. According to Backpage TXT, The action kicks off on Tuesday, 8 March when Mamelodi Sundowns look to avoid a giant killing when they host Mathaithai at the Lucas Moripe Stadium. The Brazilians, who won the title in 2008, 2015 and 2020, hammered GladAfrica Championship leaders Richards Bay 4-0 in the Round of 32, while the Sebete Boys beat fellow ABC Motsepe League outfit NC Pro’s 2-0. Marumo Gallants will be wary of a backlash when Orlando Pi…