Johannesburg, April 25 -- India's women's team head coach Amol Muzumdar has backed veteran all-rounder Deepti Sharma to come good but admitted that her prolonged lean patch in national colours is a bit of a "concern". Indian team under Harmanpreet Kaur has already lost the five-match WT20I series against South Africa after losing three games on trot but what has been a concern is Deepti's poor returns with the ball as she has remained wicketless so far. In the third WT20I match where Proteas Women chased down 192 with just a wicket down, Laura Wolvaardt and Sune Luus took Deepti to the cleaners taking 46 runs from her 3.3 overs.In fact Deepti's contribution for India in last 10 games (across 3 formats) is a meagre 51 runs and she took only seven wickets in these games. "It's a bit of a concern as far as Deepti is concerned," Muzumdar said ahead of the fourth game on Saturday. "For all champion players form is temporary, class is permanent, and she's a class player. There's no doubt about it, we have seen it in the World Cup, in bigger tournaments, in pressure situations, she has stood up for India," Muzumdar said....