RickStain said:
Opposing hitters off of Jack Morris, career
Tie game: 249/319/373
1-run game: 244/313/371
2-run game: 247/315/375
3-run game: 247/314/377
4-run game: 247/314/379
>4-run game: 249/310/389
Any questions?
Because I had nothing else to think about while running ... returning to this Jack Morris tangent (and the Buster Olney tweet YF posted about pitching differently when you're winning), the aggregate numbers say what they say. But in Morris' case -- and possibly in others -- it isn't just people's lying eyes that are telling them something. His highest-profile seasons were '84 and '92, when the Tigers and Jays won the Series and he was a Cy Young candidate.
His splits in those years:
1984
Margin 0-4 runs .235/.304/.344
Margin +4 runs .333/.357/.500
1992
Margin 0-4 runs .236/.303/.345
Margin +4 runs .318/.383/.458
Are those flukes related solely to that's the way the ball bounces? Maybe. Obviously there are other years where he was better with a +4 margin to balance those out. But at the times when the greatest number of people were paying attention to what he was doing, what they were seeing was when he had a big lead he seemed to be throwing batting practice, and in close games he hunkered down. (The other time he was under the microscope most would have been '91, and the numbers were pretty even, an argument for randomness.)
That '92 season kind of encapsulates the debate that Olney was engaged in: Morris was 21-6 with a 4.05 ERA and finished fifth in CY voting ahead of pitchers with much much better ERAs. But considering how lax he was with a big lead, I would argue that the 21-6 was a better indicator of his season than the 4.05 was. There was one game he pitched into the seventh with a 15-4 lead; ended up allowing 7 ER in 6.2 IP. Another time he had a 12-3 lead and ended up allowing 6 ER in 5 IP. But he also had three complete-game wins in games decided by one or two runs.