Serbia upset the odds in World Cup Group D as they beat 10-man Germany 1-0 in Port Elizabeth thanks to Milan Jovanovic's first-half winner.
Ghana and Serbia kick off their World Cup campaigns with their Group D opener in Pretoria on Sunday (kick-off 3pm BST).
Serbia gave their confidence a much-needed boost ahead of the World Cup by beating Cameroon 4-3 in Saturday night's friendly in Belgrade.
Shane Smeltz shocked Serbia as his goal led New Zealand to an unlikely 1-0 World Cup warm-up win in Austria on Saturday afternoon.
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"What happened at the weekend then? Is it that the lower league teams played the game of their life?..."