South Africa women are full of confidence going into the first Twenty20 international at Boland Park on Sunday, having clinched the ODI series, but allrounder Shandre Fritz is fully aware of the unpredictable nature of the shortest format of the game.”We know this is a new ball game and we will approach it with a totally different mindset,” Fritz said. “The women’s game is still fairly new to the concept but we are confident of coming out victors in this format as well. We still carry a lot of confidence from the last T20 game we played against Australia at the World Twenty20 in England and we will want to start off on good footing.”Fritz, 24, is South Africa’s most valuable asset on the field and one of the cleanest hitters. She will look to bolster the batting at the top, in a starting XI that is likely feature some unfamiliar faces along with a restructured batting line-up. Cri-Zelda Brits has been sidelined for two days with bronchitis, which will provide opportunities for the youngsters.South Africa have the winning momentum after a thrilling 2-1 victory in the four-match ODI series, including a thrilling tie in the last game. West Indies though, cannot be written off as series contenders, with the slate having been wiped clean.Of particular threat will be the top four West Indian batsmen – Stafanie Taylor, Deandra Dottin, Pamela Lavine and Cordel Jack – who have shown glimpses of their explosive hitting in the ODIs and can take the game away from any attack.The two other Twenty20 internationals in the three-match series will be played in Cape Town and Paarl on Monday and Wednesday respectively.