I used to watch a lot of men's fastpitch softball in the 1970s an 80s. I saw a lot of guys who got put in the losers bracket pitch 4-5 games the same day, including one who pitched 5 in a row in 100+ degree heat. Good pitchers could make a softball rise or drop 12+ inches from a distance of 46', or curve it either horizontal direction. 7 inning games often lasted less than an hour.
Also, keep in mind that a 70 mph softball pitch gets to home plate as quickly as a 100 mph major league baseball fastball, and they're almost never not breaking one of 4 directions. In one exhibition game in 1967 Eddie Feigner struck out 6 MLB Hall of Famers in a row (
Willie Mays,
Willie McCovey,
Brooks Robinson,
Roberto Clemente,
Maury Wills, and
Harmon Killebrew). Struck out. Couldn't put a ball in play.
Fastpitch softball is a great game. I wish there was still big time men's teams/tournaments, but it's almost completely died out due to a lack of great pitching. Back in the early 80s, the last couple times I attended the men's nationals, about half of the really good pitchers were from New Zealand or Australia, because it was a dying sport in the US.
I do enjoy the women's college game, even though it's much more a hitter's game than the men's game was. I can't hardly watch an entire college baseball or MLB game because the pace of play is soooo slow - and I'm a 60-year baseball fan and purist.