After reviewing all Teams who went to Post Season's in the last 25 years; focusing on their over/under Runs Differentials, I can't find any additional team's with a minus Run Differential, that went on to P.S. play........(or like Vic said, such information with the "expanded PS play format, thus I'm looking for any Run Diff, by any team, who simply won their Division Pennants, with a minus Run Diff).....
On the other end, what I've found even more amazing, was the 1998 Yanx +309 Run Differential, (boy were the 90s great!!!),
compared with-
1961 Yanx: +215 Runs Differential
1927 Murder's Row + 376 Run Differentials.......... (Murder's Row, the best cliche title, ever to be labeled by any MLB Team, IMO)......
over time, I'm gonna' look to see What if any Teams, who may of even came close to these 3 Classic, and IMO, best Teams to ever play the game......