I was at the old Mile High Stadium in Denver for a game with the Giants during Bond's steroid rampage. He hit a line drive that never went higher than about 12 feet that hit high off the wall in right about 360 if I remember. Larry Walker who was in right field for the Rockies raced back and played it perfectly off the fence as the sound reverberated throughout the ballpark. Walker's great arm had the ball back to the infield before Bonds could get any farther than first base. I'm not sure that the ball had even reached it's zenith before hitting the fence. A millimeter higher on the bat and they'd still be looking for that one. Bonds wasn't even out of the batter's box when it hit the fence sounding like a car wreck. Hardest ball I've ever seen hit.
I worked at angel stadium at this time. I was up in the right field view level. I kid you not the ball went out of the stadium and landed where we lined for roll call before the game. I tell this story at least a few times a year. It was incredible.