It’s taken less than two weeks for injuries to affect the Celtics yet again. This time it is big man Daniel Theis, who had already missed the final three months of last season because of knee surgery.
Theis, who had been dealing with heel issues, tore his right plantar fascia — the tissue on the bottom of the foot — during Saturday’s win over the Pistons and will be out indefinitely. If Theis does not require surgery, the estimate is 6-8 weeks.
The injury robs the Celtics of their capable backup center and will offer an opportunity to rookie Robert Williams, who played eight minutes against the Pistons. Theis, who was beginning to work himself into shape after his recovery, scored a season-high 17 points with 8 rebounds in just 19 minutes of Boston’s 109-89 win. With Aron Baynes having missed three games with a strained right hamstring, it’s uncertain who will start at center Tuesday against Detroit.