Kei Nishikori will advance past Michael Antonius in US Open qualifying and keep his retirement-season storyline alive. Nishikori arrives after a 6-1, 2-6, 6-2 win over Sebastian Ofner on August 25 and he will face Antonius on Court 17 on August 26. Antonius brings a 6-1 hardcourt mark in 2026 and a…