I guess we are getting him close enough to finals with enough fitness to then hit him with pain killers to get him through a game.
The body builds up a tolerance to pain killers, so timing is critical, that they are effective for long enough to get him though a finals series.
Depending on injury and pain meds, I reckon 4-6 weeks is the timeframe where they are most effective.
Then gone at seasons end from a playing capacity
This.