Getting ready for pitchers and catchers to report...here's my All Time I Saw Them Hit A HR Live & In Person Team:
1B McCovey (also McGwire, Thomas, Murray...lots here. Make McGwire the DH)
PH: Can't choose between Mota and Staub. Both against the Giants, both painful.
I saw Mike Schmidt several times, but have no recollection or old scorebook showing a HR. I think I saw Aaron once when I was real small, and I'm fairly certain I saw him in spring training with the Brewers, but no idea if he hit one out or not. I'm not sure whether I ever saw Joe Morgan play...I feel like I should have, but I can't think of when it would have been.
I saw both Brad Ausmus and Darryl Motley hit two HRs in a game. I saw Johnny LeMaster hit a HR. The only pitcher HR I noticed leafing through old scorebooks was Russ Ortiz. I'll leave it as a question for the readers which of the events in this paragraph is least likely.