WALTHAM — Doc Rivers  has seen that lightning-quick, cross-court pass that paralyzes a defense before leaving them powerless to prevent an easy, uncontested basket.
Magic Johnson  did it seemingly at will in the 1980s and Rivers had an up close and personal view for it all.
It is precisely for this reason the Celtics  coach is worried about LeBron James . Yes, No. 23 can take it to the rim. Yes, James can rebound and block shots. But what James can do to get others involved is the hardest aspect to prepare for in this series against the Cavaliers .
“He’s a bullet passer,” Rivers said on Thursday, two days before Game 1. “He’s the only guy I know of like Magic. The ‘steam’ bullet passes. He throws cross-court passes that are 100 miles an hour and it’s tough to react to.
“We showed the guys that on film and if you’re not down in your stance and you’re standing straight up on the weakside and he makes that pass, there’s no way you’re going to get out to that shooter.”
Rivers tried his best to get his team ready but admitted it’s next to impossible.
“We worked on that [Thursday] and there’s nobody on our team that can throw that pass so the work didn’t look as good. We kept getting out to the shooter and I said, ‘Yeah, we’re throwing softballs.’
“He’s a great passer. In some ways, I think he wants to pass sometimes.”
James is also the leading triple-double threat in the league. But Rivers said, like with Dwyane Wade , the Celtics can live with the points but not the rebounds and assists.
“Well, the 10 [points] and the 10 [rebounds] we can’t have,” Rivers said. “The 30 and the 40 [points] we don’t want and, if he has it, we want him to have it our way, not his way. That’s what upset us a little about Wade in a couple of the games. He got to 46 his way. The big game the last night [Game 5], he got it our way. We kept everyone else out of it so that was good.”