He said man-up, as in man to man defense. He was saying
that players need to stay glued, even on the PnR, which they don’t.

PnR isn’t anything new. That was Utah’s bread and butter back in the 90s
, and they had good shooters. But Bulls had Pippen, Jordan and Rodman, who
stay glued or knew how to switch.

Players depend on system defenses now, and they lack man to man ability.
Milwaukee has too much length to not know how to defend against Jokic on the
PnR.

The problem is players are playing lazy defense.