Samoa have stuck with a winning combination for the final of the four-nation tournament in South Africa where they are up against their hosts in Pretoria on Saturday.Coach Stephen Betham on Thursday named the same line-up that eased to a comfortable 39-10 win over Italy in Nelspruit last week for the match-up with the Springboks at Loftus Versfeld.There is only one change among the substitutes where flanker Alafoti Faosilva replaces Piula Faasalele, who won his first cap off the bench last weekend, a Samoa Rugby Union statement said.Samoa beat Scotland 27-17 in their first game of the competition in Durban on June 8 and followed that up with five tries against the Italians last Saturday.Samoa have lost all seven previous tests against South Africa but pushed the Boks close in a 13-5 setback at the 2011 World Cup in New Zealand in their last meeting.