No, those were definitely not uncommon back in the day. As Irish says, 'different times'. One of the more noted examples was Don Larson's WS perfect game. Larson found out he was that day's starter in the way a lot of pitchers found out: if your mitt, rather than being in your locker, was instead sitting on your stool with a new 'game' ball in the pocket, then it was your game. A talk from your manager wasn't even part of it. Basically the whole idea of players having any sort of say in, or advance notice of, when or how often they'd play was an idea not yet standard practice. When Islander coach Al Arbour agreed to the request from his goalie tandem of Billy Smith and Glenn Resch that they always know in advance who was going to start the next game during the season, it was considered a very novel concession at the time. Koufax, btw, was still about 2-1/2 months from turning 30 in that above clip w/Scully. He'd pitch just one more season before retiring, a season consisting of 41 starts, 323 innings, and 317 Ks!. The 1.73 ERA he threw in '66 was the lowest of his career and he led the league in numbers of batters faced in both '65 & '66 All of which kind of clues you in to why he felt it necessary to hang 'em up at the age of 30.