Re: Hardest hitters?
Wily Mo could put on a show in batting practice. In Cleveland I saw him hit a ball that would've flown over the truck parked in left field (similar to that Toyota promo they run at GABP where nobody actually hits the truck), but it curved a couple of feet foul.
The other memorable shot I saw from a Red was actually from a Bat in a AAA game. For those familiar with 5/3 Field in Toledo, Ruben Mateo crushed a ball so hard that it likely would've make it completely over Monroe St. had it not hit the scoreboard.