WALTHAM — Ray Allen  has always been one with his precisely tuned body.
So, when it speaks up, he listens.
Take the last two weeks for example. He tried playing several games on his sore left ankle – injured on March 12 in Los Angeles. But the pain in the ankle got worse and worse, to the point where he had to shut it down completely, starting March 23 in Philadelphia.
“I never liked taking shots or taking medicine. I tried to do everything as natually as I can. Sometimes your body needs a kick in the right direction. Physically, the time off was good. My ankle was kind of pissed off. I kind of gave it a little help and time off was good but getting that joint lubricated [was] more than it was otherwise.”
Doc Rivers  confirmed that if Allen is cleared to play on Wednesday, he will start and not come off the bench. The team is 5-1 in the six games without Allen and 5-0 with Avery Bradley  taking Allen’s spot at starting shooting guard.
Allen practiced with the Celtics  for the entire session on Tuesday, and barring a late setback, is expected to start Wednesday night against the Spurs at TD Garden.
Allen has missed the last six games with an injured left ankle, suffered when he turned it late in the game against the Clippers on March 12 in Los Angeles. Allen said he had a cortisone shot on Sunday to help manage the discomfort and see if he could practice on Tuesday, which he did.
“I felt good to be out on the floor,” Allen said. “My legs felt great today. I had a shot in the ankle on game day the other day and had all day [Monday] for it to manuver through my body and coming into today, I felt like I had two new wheels.”
Allen said he is encouraged to the point where he believes he’ll be ready to start on Wednesday night.
“Oh yeah, going through shootaround and kind of favoring it, holding it, feeling different feelings and wincing, I didn’t feel that at all today,” Allen said.
Other notes from Tuesday’s practice in Waltham: Mickael Pietrus  visited teammates at Celtics practice on Tuesday but had to leave because of the noise of the bouncing balls. Rivers said Pietrus, who suffered a concussion in Philadelphia on March 23, still has not been cleared for preliminary baseline tests on his head injury. ‘¦ Rivers indicated that Tuesday would likely be the last practice of the regular season, due to the compressed schedule the rest of the way, which including a series of three road games in three nights between April 13-15, when they play the Raptors, Nets and Bobcats.