Should we be worried about Marcus Smart's mysterious toe injury?

Smart clearly still struggling with the nagging pain in his toe, Mark Murphy reports:

It's looking less likely that we will see Marcus playing against Washington on Friday night. This tweet comes after Souza's tweet and if Smart is still limping, he probably won't be playing tomorrow.

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Scott Souza reports that Smart is feeling better and may play Friday.

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Just before the tilt with the Indiana Pacers last night, news broke that Marcus Smart was not in the starting lineup. Isaiah Thomas got the nod, which Celtics fans have reasons to be excited about, but why Marcus Smart wasn't starting put a damper on the lineup change. Per Adam Himmelsbach:

Smart, who missed 15 games in his rookie season, has been vulnerable to injuries in his time with the Celtics. Smart started last year's campaign with a sprained ankle that sidelined him for 10 games, and then an achilles injury kept him off the court in early December. Now, four games into the 2015-16 season, Smart might see some time on the pine with a plaguing toe injury. Is it cause to worry? Smart has been a spark plug for the C's through the first three games, as he's been an elite defender, and a decent offensive option. Isaiah Thomas was able to step up as a distributor in the first half against the Pacers last night, and then as a scoring threat in the second half, but there was a clear hole in the second unit with a rookie Rozier on the floor.

What's odd about this injury, though, is that there hadn't been any conversations about Smart's toe and the truth is, nobody really knows how it happened:

Steve Bulpett and Adam Himmelsbach also said that Smart was wearing a walking boot on his foot in the locker room before the game. The second-year guard was not even on the bench in Indianapolis as Himmelsbach explains:

Hopefully the injury isn't too serious and Smart will be able to suit up for the Celtics game at home on Friday against the Washington Wizards.

Topher Lane is on Twitter, @Topher_L. Photo credit: Aaron Gash/Associated Press