Kazakhstan’s top-ranked tennis player Elena Rybakina (World No. 5) defeated Belgium’s Elise Mertens (21) with 6-1, 6-3 to advance to the quarterfinals of the Australian Open 2026. Her possible opponent in the next round is the world’s second-ranked player, Poland’s Iga Świątek. Mertens’s head-to-head record against Rybakina (1-6) did not…