What happened to South Africa?

After easily handling the West Indies national team throughout December in a series of multi-day test matches, the Proteas have dropped two straight T20I single-day matches to the Windies in a row. Both losses came by four wickets.

Smart minds acknowledged before the T20I series started that the Windies had a style of play more conducive to single-day match play, but the South African squad's bats have been surprisingly silenced. This does not look like the team that was contending to be mentioned as the world's number 1 squad just a month ago.

After today's match, up next between these squads is a lengthy ODI series. Can South Africa course correct its recent swoon?

The free live stream of South Africa and West Indies' third T20I series match is available RIGHT HERE.

South Africa Squad (subject to change)
 F du Plessis*, KJ Abbott, F Behardien, M de Lange, JP Duminy, RR Hendricks, Imran Tahir, DA Miller, JL Ontong, WD Parnell, AM Phangiso, K Rabada, RR Rossouw, MN van Wyk, D Wiese

West Indies Squad (subject to change)
 DJG Sammy, SJ Benn, CR Brathwaite, SS Cottrell, ADS Fletcher, Chris Gayle, JO Holder, AR Nurse, KA Pollard, D Ramdin†, AD Russell, MN Samuels, LMP Simmons, DR Smith