Pitching is a little bit like golf ... it is not always pretty ... to watch or play.
Pitchers and golfers ... do not always have your "good" stuff ... which limits your effectiveness. (As a catcher, I often told the coach to replace the guy on the mound.)
Some holes do not "fit your eye" that is why pitchers are pulled, right vs left or power vs junk ... sometimes the match up is just not good! (My brother cannot fade the ball, hates dogleg right. We had a pitcher who could not get a lefty out. Ever!)
If you are in a groove, then you roll and go with it ... until it goes away ... then, you grind and hope you make the cut ... more often than not ... you sit and watch. (Some pitchers cannot accept that they do not have it.)
The difference between "on" and "off" is huge. Sometimes, it is just fluky. Spaun hit the perfect shot and it hit the pin on #2, on #3 his tee shot bounced into a bad lie in the rough, and on #4 his ball hits a rake and goes into the rough. Bogey, Bogey, Par.
For coaches, it is more like Texas Hold 'Em ... you gotta know when to hold 'em and know when to fold 'em. AND EVERYBODY second guesses your choices when it does not work out ... on the golf course and on the ball field.