VANDERBIJLPARK. – NWU Vaal’s dynamic duo does it again. Siblings Alan and Marga Cumming put in sterling performances at the USSA Athletics Championships in Cape Town. Alan won the senior hammer throw for men with a throw of 68.39 m. His closest rival Damian Bothma claimed second place with a throw of 59.92m. Marga who recently made a comeback after a major knee surgery finished second in the senior women with a throw of 57.04m.