Kwesi Appiah's Ghana lost 1-0 to the Netherlands in Rotterdam at the end of last month and by the same scoreline to Montenegro in March, meaning they have not won since a friendly against Namibia in January.
Ghana, who came within a whisker of qualifying for the semi-finals of the 2010 World Cup in South Africa, face a tough task getting out of Group G in Brazil having been pooled with Germany, Portugal and the United States.
Four years ago, Ghana reached the World Cup quarter-finals but missed out on a berth in the last four to Uruguay after Asamoah Gyan's spot kick in the final minute of extra time hit the crossbar, following Luis Suarez's handball on the goal-line.
While Ghana's form indicates they may find this year's World Cup tougher, Samuel Inkoom, who played twice in South Africa - including the controversial Uruguay game - reckons they are even better in 2014.
"I believe we have the quality, experience and team spirit to go even further (at the World Cup) this time around," the Dnipro defender said in the lead-up to Monday's friendly.
Hong Myung-bo's South Korea are in similarly poor form to Ghana with three defeats in their past four matches, including a 1-0 loss to Tunisia last week.
But in a blow to Hong's preparations, the South Korean squad has been hit by a virus this week, while Appiah will have to monitor the fitness of goalkeeper Adam Kwarasey, who left training with a suspected thigh injury on Tuesday.
