The Celtics finish this four-game Western trip tonight at Portland. The Blazers haven't played since Saturday and will be playing the fourth game of a five-game homestand. Blazers center Greg Oden sprained his left ankle coming down on the foot of teammate Shavlik Randolph at practice yesterday. X-rays were taken and he will be a game-time decision, according to the Blazers. Guard Brandon Roy has a mild hamstring strain and is a game-time decision, too. He was injured last Saturday against Toronto and didn't practice yesterday . . . Asked about the challenge of finishing the trip strongly, Pierce said, "It's easy to be focused for this last game. Obviously, when you go on a trip, you want to go 4-0. Being that we are behind the 8-ball a little bit, we want to kind of make up the games that we lost. We felt like we could have won the Golden State game and the Laker game. We want to make it up here in the last game of the road trip. We're not one of those teams that pack it in in the last game and go home."
