Allen (ankle) does not travel with C's

Jerome Miron/US Presswire

Ray Allen's right ankle has flared up again.Celtics guard Ray Allen, who sat out Wednesday's game due to swelling in his ailing right ankle, did not travel with the team to Toronto on Thursday in advance of the start of a four-game road trip.

Allen missed six games spanning into April after the ankle, originally tweaked during Boston's west coast road trip in mid-March, developed swelling and limited his mobility. An MRI revealed no structural damage in the ankle, but he received a cortisone shot shortly before his return.

Allen appeared in five games over a seven-day span, but the swelling returned. During Tuesday's win in Miami, he left the bench at the start of both halves to have his ankles re-taped, an indication that the ankle were potentially bothering him then. Celtics coach Doc Rivers said he got a call Wednesday afternoon alerting him that Allen wouldn't be available against the Hawks.

"It just swells, I guess," said Rivers. "I don’t know. I got a call a little while ago [informing him that Allen would be out]. It is what it is... I’m just more concerned that this is the second or third time this has happened. So that’s concerning."

Rivers said his expectation was that Allen would travel with the team and play in Toronto, but him not making the trek is not an encouraging sign about the status of his ankle. The loss of Allen was lightened by the return of swingman Mickael Pietrus, who had missed 17 days due to a concussion.

After one game in a starting role upon his return earlier this month, Allen began coming off the bench in order to allow second-year guard Avery Bradley run with the first unit. The Celtics are 11-1 without Allen this year.