Somma, who has scored 11 goals in 20 games for Leeds this season after forcing his way into Simon Grayson's first-team plans, fired South Africa into a second-minute lead and went on to hit the post in an outstanding display in his second appearance for his country.
Meanwhile, Leeds winger Robert Snodgrass made his international debut as a 57th-minute substitute for Scotland in their 3-0 Carling Nations Cup win over Northern Ireland in Dublin and striker Ramon Nunez stepped off the bench for Honduras in their 1-1 draw against Ecuador.
Source: PA