I saw Seaver his rookie year (he lost to Mel Queen and the Reds at Crosley Field), I was spoiled growing up with the Big Red Machine with Pete Rose, Johnny Bench, Joe Morgan, and my favorite player Tony Perez. I haven't bothered to look up the stats but Perez seemed to always be reliable with men in scoring position.
I may have seen Hank Aaron, it's terrible but I don't recall if I saw him in Cincy or not.
Also saw Ken Griffey Jr. after coming to the Reds, he could still play, too bad he had so many injuries.
According to Frank's list of Bill James, the best I saw would have to be either Aaron (if indeed I saw the Braves in town, seems like I did) or Morgan.
RC
Edited to add: Hey, this was post #200 for me, only about 300 more and I might nab one of the infamous Net54 pins!