India ended Day One at 37/1, trailing South Africa by 122 runs after Jasprit Bumrah’s sensational 5-27 skittled the visitors for 159 at the Eden Gardens.
South Africa’s bright start at 57/0 quickly faded as India took all 10 wickets for just 102 runs, with Kuldeep Yadav and Mohammed Siraj adding two each.
Chasing, India lost Yashasvi Jaiswal early, but KL Rahul and Washington Sundar steadied the innings with a cautious unbeaten stand. Variable bounce and tight bowling tested the batters before bad light ended play, leaving India well-placed after a dominant bowling display.