I first started noticing the change in the 1990s. I was watching a Braves' game and a Braves' pitcher threw an almost perfect pitch on the low outside corner and Mike Piazza hit this sky-high flyball that I thought would be the proverbial "can of corn" for the right-fielder. Camera pans out and the ball just kept going and was a fence-skimmer HR. I thought it was an anomaly, but then I saw Albert Belle do the same thing. PEDs might have played a role then, but the more I watched, the more I saw stronger players driving outer-half pitches the other way to great success. There was always a handful of guys--Reggie Jackson for one--that swung hard (and had a high K-rate) but had very good opposite field power, but I just see it being more a part of the game. Pitching inside and moving guys off the plate has become verboten, so the outer half just isn't a safe bet for pitchers anymore.