How worrisome is Robert Williams’ knee surgery? Chris Mannix offers insight

How worrisome is Time Lord’s knee surgery? Mannix offers insight originally appeared on NBC Sports Boston

With less than one month go until NBA Opening Night, Boston Celtics fans received some less-than-ideal news on Tuesday.

C’s big man Robert Williams reportedly will undergo surgery on his left knee and miss the next four-to-six weeks. That makes him unlikely to suit up for the Oct. 18 season opener vs. the Philadelphia 76ers, but barring a setback, he shouldn’t have to miss many more regular-season games.

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While it’s encouraging Williams probably won’t miss much time, his injury history is a cause for concern. The 24-year-old has struggled to stay on the court so far in his four-year NBA career and his surgery will be on the same knee that required a procedure in March to repair a torn meniscus.

Sports Illustrated’s Chris Mannix provided more details on Williams’ surgery Tuesday on Early Edition.

“I’ve checked in with a few people within the organization. A lot of what I heard is Robert Williams, in the aftermath of the Finals, took a lot of time off. Really needed to rest that left knee after effectively being day-to-day for the better part of two months.” Mannix said. “When he did start to ramp it up again, this sort of persistent pain was occurring in the knee and the Celtics decided let’s get it done with right away, maybe we’ll miss a week, maybe we’ll miss two weeks of the regular season, but let’s deal with this now before the games really count and be healthy for the duration of the season.”

So, just how worried should Celtics fans be about Williams’ latest injury scare?

“I think if you’re going to put it on a 1 to 10 scale, I would say 5 or 6 right now,” Mannix said. “I mean, Robert Williams did need knee surgery toward the end of last season, but he came back a lot faster than anyone expected. And he has shown everybody in…