Allen enters the 2010 Eastern Conference Semifinals averaging nearly 20 points in the first round. His next opponent, however, is the same team that shut him down offensively in the past.
The Cavaliers held Allen to just 9.3 points per game in the second round of the 2008 playoffs. He only hit four 3-pointers in the seven-game series and shot less than 35 percent from the field. It was a dramatic drop in offensive production.
‘I was put on defense more, but the way they were guarding me in Cleveland, they jumped me every pick-and-roll,’ Allen explained. ‘The way we played, they weren’t letting me come off pin downs. I think in the regular season I was averaging 22 or 23 against them, so their mindset was, ‘We’re not going to let him get involved. We’re going to take everything away from him.’ They did a good job of that.’
Allen was the Celtics leading scorer against the Cavs this regular season, averaging 22.5 points (48.3% FG, 57.7% 3PG) in four games. He expects the Cavaliers to step up their defense in the playoffs and can anticipate how to counter their attack.
‘I just know during the playoffs, they contribute two guys to me, always, just when I’m coming off pin downs,’ Allen said. ‘I have to make the right play, (Rajon) Rondo  has to be in the right position, our bigs have to be in the right position, and we have to capitalize off of that. The only way we can force them away from that kind of defense is if we penalize them for doing that.’
The Celtics often practice beating a double-team during shootaround, Allen explained. They run through various scenarios that leave different players open.
Allen also prepares himself for double team by watching game tape. This allows him to see where his teammates are on the court from a different point of view. In most instances, it is either Kevin Garnett , Kendrick Perkins , or Rondo’s defender who is helping on D, creating opportunities for them to get open.
‘I’ve just got to know where Kevin is, where Perk is, where Rondo’s going to be,’ he said. ‘Rondo’s man always help, Perk’s man always helps, Kevin’s always flashing if he’s not setting a screen. When I come off a pin down, it happens so fast. So right before I come off a screen, I almost have to look and see what exactly they’re doing, and then I know I can throw it back and go, or Perk is rolling and he’s got a layup, Kevin has a jumpshot. So it’s just like a split-second decision.’