London, June 13 -- Australia captain Pat Cummins reigned supreme and toppled records with his sizzling six-wicket haul on the second day of the World Test Championship final at the famed Lord's against South Africa as the fate of the prized title hangs in balance.

Cummins ripped South Africa's batting unit apart with his scorching six-wicket haul to hand a slender advantage to the defending champions in the first innings. He returned with figures of 6/28 in 18.1 overs. He became the eighth player for Australia and overall the 40th to breach the 300-wicket milestone in Test format.

The 32-year-old is the fifth-fastest to reach there in terms of balls bowled. He soared to 300 Test scalps in 13,725 balls, surpassing West Indies icon Malcol...