India to face a formidable South Africa in their final World Twenty20 warm-up game in Mumbai today. This contest promises to be a tough test for the hosts' strengths before the tournament's main draw begins on March 15. India have been on a roll in the shortest form of the game of late, winning 10 of their last 11 outings which included a 3-0 whitewash of World 50-over champions Australia in the latter's backyard.