Mandhana smashed 37 off 19, sending India to 71/1 in the powerplay, and the opener’s explosive start steered the semi‑final to a decisive victory over Bangladesh.
With that knock, Mandhana eclipsed Suzie Bates' 4,758, landing at 4,788 runs, and added her 100th six to the tally, a first for an Indian woman in the format.
The turning point came when Sobhana Mostary snatched a deep mid‑wicket catch after Mandhana mistimed a sweep, ending the powerplay and forcing Bangladesh to tighten up.
The team celebrated on the field while the crowd erupted, with the opening stand hailed as the match's turning point.
India heads to the gold‑medal showdown against China, while Mandhana eyes a new record for most sixes in women's T20Is.