King has a chronic knee injury which needs careful management, but the Spurs star returned to training on Sunday after missing Saturday's session to work on his fitness in the swimming pool and gym.
Maguire was short on confidence and left a red short of the pocket while using the rest in the seventh frame to let O'Sullivan in again with a 52, and lost the final frame of the session after missing an ambitious long pot.
Let that irritation motivate that gym session, that extra half mile, the necessary sacrifices to find that extra, missing percentage and return the Jets to the postseason.