That was one of those shockers, buddy. I remember watching it in my local with the missus, we only met a year before, and she couldn't wait to watch the heroic Pete. But Safin was in gorilla mode, butchering everything, and suddenly it looked like the whole tennis firmament shifted on its axis. I remember watching Lendl destroy McEnroe in the 1982 US Open semi, with such a powerful assault that Mac looked like he was playing in black and white, and Lendl in HD. It had a similar effect on me, watching Safin that day. He seemed indestructible, and Pete looked old. His game looked dated.
Of course, we know what happened with Marat, he never lived up to it, but still, that's one of the most extraordinary entrances onto the GS final stage we ever saw...