And Bonds's last 3-5 were his best weren't they? This wasn't just about longevity. He had his best years or at least close to it at the end. This wasn't about extending his career while putting up similar or slightly worse numbers. He had all time years. Yes, he had his best seasons post-1998: 11.9 WAR in 2009, 11.8 in 2002 and 10.6 in 2004. But he still had amazing years prior to 1999: 8.0, 9.7, 7.9, 9.0, 9.9, 7.5, 9.7, 8.1, 8.1. Nobody is arguing that that he didn't benefit from using; the issue is with your idea is that he wasn't a fantastic player before he was using. You subtract his entire career from 199 onward and he is still a phenomenal "once in a generation" talent.