Mitchell Robinson's latest injury underscores Knicks' Isaiah Hartenstein free agency dilemma

Mitchell Robinson's latest health issue brings Isaiah Hartenstein's future to the forefront, both for this season's playoff run and the years ahead on Jalen Brunson's shoulders. Robinson, when healthy very early this season, emerged as an All-Defense candidate and the NBA's top offensive rebounder. But he's now missed the majority of two of the last three playoff runs with foot-area injuries. He's sat roughly 40 percent of the regular-season games in the last four seasons. Hartenstein, a revelation after taking Robinson's starting spot this season, has proven more durable, even with that troublesome left Achilles . And the 26-year-old is heading into a free agency that he's expecting will bear