...and not so great for film audiences... in my opinion. Here's why...
It's not that difficult to make a good film with the source material being a good play. The problem is that the filmmakers hesitate to stray too far from the original story.
A play is written with oftentimes very obvious "on the nose dialog," with lots of repetition. Live theater audiences rarely are close enough to see the actors clearly, and so they don't have the benefit of reading facial expressions or even, as odd as it sounds, seeing the actors' lips reciting the dialog. So theatrical dialog is obvious, repetitive and oratorical.
However, that's not an issue with film. As film audiences, we're usually right in the middle of things when dialog is being spoken. Movie watchers don't need overt and repetitive dialog. There can be a lot of nuance.
So the failure with most adaptations is that the filmmakers don't make the needed adjustments, and that's where this version (I haven't seen the other) of That Championship Season fails. We're watching a movie with dialog pulled from live theater.
I do have a quarrel with the original play. Without going into details - no spoilers here - I really have to wonder why none of the four guys left the coach's house as they fought amongst themselves. I certainly wouldn't have stuck around if things got as heated as they did in this story. Maybe I'm just not willing to put up with accusations, insults and worse.
Two last things about the movie, minor things only a film geek like me would have noticed.
First, in a few low-angle shots we could see glare from a few of the movie lights placed up above the camera's field of view. The overall color of "practical" (intended to be in the shot) light was the golden color of tungsten bulbs, but the glare was very white and came not from anyplace a practical ceiling lamp would have been placed.
The second thing was the wardrobe choice for the guy who'd set his life aside for others because he wouldn't stand up for himself. He had 1950s-style glasses, a short sleeved shirt with his suit, and white socks. That was a silly, lazy way to make him look like a second class citizen.