Last pitcher to both win and lose 20 games in a season was...

[kairos12]

Joe Niekro

1979

21-20.

[AZSkiffyGeek]

1. Those crazy knuckleballers

Either lights out, or lit up.

[Bleacher Creature]

2. I can't imagine that happening again anytime soon.

You'd need at least 40 starts in a season, and to get decisions in each one. I guess it could happen with someone splitting starts and relief appearances, but that would still take a huge percentage of those resulting in decisions.

[Diamond_Dog]

3. Has the knuckleball disappeared from baseball?

You don’t see any knuckleball pitchers any more.

[kairos12]

4. My search found this guy. Maybe he's the only one.

https://www.si.com/extra-mustard/2021/06/24/orioles-mickey-jannis-knuckleball-pitcher-debut

[Diamond_Dog]

5. Now there's a guy you can't help but root for!

Thanks, kairos12.

[kairos12]

6. Gives us all hope.

No need to throw 95 MPH. So,maybe, just maybe, if I go out back and work on my grip and throw against a fence I can play for....

Baseball dreams. The best.

[Best_man23]

7. I remember Joe Niekro

Had really well kept nails.

[kairos12]

8. That was classic.

That's why Gaylord used the grease.

[Brother Buzz]

9. Off topic, but timely just the same:

Dusty Baker's first big-league at-bat was as a pinch-hitter for Phil Niekro against, coincidentally, the Astros. He grounded out.
(Sept. 7, 1968)