PHILADELPHIA — If there were ever a team that needed to close out a series, the Celtics  are it.
The Celtics lead the Sixers, 3-2, in the best-of-seven series and need just one more win to advance to the Eastern Conference finals for the third time in five years. The previous two times (2008, ’10) have ended with Celtics reaching the NBA finals .
But it won’t be easy if history is any indication. In the “Big 3″ era of Paul Pierce , Kevin Garnett  and Allen, they are just 2-10 in potential closeout games on the road. They won the Eastern Conference finals in Detroit in Game 6 in 2008. They swept away the Knicks in the first round last year. So, well before Garnett’s comments about the Philly fans, tonight was going to be a monstrous task.
On the injury front, Bradley said at Wednesday morning’s team shootaround that he has felt little improvement in his ailing left shoulder and he will almost surely miss his second straight game of the series as Boston attempts to close out Philadelphia in Game 6 here at Wells Fargo Center .
“Right now, I’m not playing,” Bradley said, as he received treatment from strength trainer Bryan Doo. “I’m definitely frustrated but all I can do is keep getting stronger and keep improving for my team. I’m just trying to get it better. It’s been the same. I just have to keep trying to get is stronger everyday. I just want to make sure I’m 100 percent for my time. I’m just taking it day-by-day right now.”
“He’s a little better, not much,” coach Doc Rivers  added. “I don’t think he’ll play. He won’t do anything in shootaround for sure, and then do what we did the other night. We’ll let him warm up and see if he can warm up and then go from there.”
Bradley had the shoulder pop out early in the third quarter of Game 4 last Friday night and missed Game 5 with the injury. Allen started in his place in Game 5 and will start again for Bradley in Game 6 should Bradley — as expected — miss Game 6. There is some uncertainty regarding Allen and his ailing right ankle.
“It is what it is,” Rivers said of Allen. “He’s a go right now. Obviously, if he can’t go, we’ll have to go somewhere else.”
Stiemsma also reaggravated his foot injury in the second half of the Game 5 win Monday. He was at shootaround Wednesday and is expected to be available off the bench.
“He’s good,” Rivers said. “The foot was aggravated again [Monday]. He says he feels much better today. He’ll definitely play. He’s the definite of the three guys.”