In the first innings of the opening Test, Harmer claimed four wickets, helping restrict India’s lead to just 30 runs. He followed it up with another four-wicket haul in the second innings, playing a key role as India were bowled out for 93 while chasing 124. His efforts secured South Africa’s first Test victory on Indian soil since 2010.

The 36-year-old continued his exceptional form in the second match, taking nine wickets as South Africa sealed a historic series win. His three wickets in the first innings helped the visitors gain a massive 288-run lead. Harmer then delivered his best spell of the series in the second innings, completely outfoxing India with his spin brilliance. His return of 6/37 powered South Africa to a dominant 408-run victory.

Simon Harmer finished the two-Test series with 17 wickets at an average of 8.94 and an economy of 5.66. His outstanding performances not only secured the series sweep but also lifted South Africa to second place in the ICC World Test Championship 2025–27 standings.