Yashasvi Jaiswal has no qualms in admitting that the South Africa series was a challenging one and said it was India skipper Rohit Sharma, who helped him maintain a positive mindset. Jaiswal managed only 50 runs in 4 innings on bouncy tracks at Supersport Park in Centurion and Newlands in Cape Town as the two-Test series ended in 1-1 draw. (Match Report | As It Happened | Scorecard | Full Coverage)