Some have been broken but will never be surpassed again. Let me start with a few: 1) Ricky Henderson's career stolen bases at 1406. 2) Wilt Chamberlains 100 point game. 3) Nolan Ryan's Career Strikeout record at 5714. 4) Wayne Gretzky career points at 2857.
yeah, the pitching wins records in baseball are unassailable, but that is because the game changed. I mean, Cy Young's 511 is so ridiculously out there, that it is beyond mentioning.