Nche follows in the footsteps of fellow Springbok loosehead Steven Kitshoff, who twice previously topped the chart.
The 29-year-old Nche heads an all-South African leading group, with fellow Springbok and Bulls forwards Elrigh Louw and Gerhard Steenekamp in second and third, respectively.
Leinster and Ireland back row forward Jack Conan is the best performer from another country, with Edinburgh's recently recruited England international tighthead prop Paul Hill lying behind him in fifth.
--ChannelAfrica--