He again made a big impact in the 2013 Currie Cup, taking advantage of Tiaan Liebenberg's injury and skipper Deon Fourie's switch to the flank to again be an ever present member of the side.
He started 11 games and made 1 substitute appearance as Province reached the Currie Cup Final for the second year in succession, this time going down 33–19 to the Sharks in Cape Town.
[6] On 28 October 2013, SARU announced that Ntubeni was included in the 30-man squad for South Africa's 2013 end-of-year rugby union tests against France, Scotland and Wales in November 2013; however, he did not play in any of the matches.
[7] On 28 May 2016, Ntubeni was included in a 31-man South Africa squad for their three-test match series against a touring Ireland team.
[9] He was named in the starting line-up for their first match in Bloemfontein,[10] but ended on the losing side as the visitors ran out 32–24 winners.