If I recall correctly, Gibby had a 1.12 ERA in 1968. Mind boggling. One of the greatest of all time.
Pitching was dominant in 1968. Carl Yastrzemski won the batting title, with an average of .301.
In a sign of the times in 1968, that only yielded a 22-9 W-L record. You would have figured 27-4 (or better), but he didn't get much run support.
He had 13 shutouts that season, but didn't get his first one until the 12th game he pitched (out of 34 starts). So, 13 of his last 23 games started he pitched a shutout. Raised mound or not, that was unreal.