With 3:50 remaining of the second quarter, Cleveland Cavaliers’ leading man James took a blow to the head from the left shoulder of Boston forward Jayson Tatum as he drove to the basket.
Amid concerns over a concussion with the four-time MVP looking dazed in the aftermath, James briefly went back into the locker room.
It was revealed that the 33-year-old had only suffered a neck strain and he returned to the floor with 1:57 left before half-time.
James had posted 24 points, four rebounds and four assists in his 16 minutes before the problem and went on to finish on a game-high 42 points with 12 assists and 10 rebounds to make up a triple-double.
But the Cavs fell to a 107-94 defeat at TD Garden which leaves them 2-0 down in the series and James’ hopes of an eighth straight NBA Finals in the balance.
Fortunately however, as the defending Eastern champions take the Conference Finals back to Cleveland, James is injury-free.
On the problem, James told reporters post-game: “I felt like I needed to go back to the locker room – which I did – to kind of recalibrate.
“It was a tough blow. Obviously incidental.
“His shoulder hit me right square in the jaw.
“I just wanted to go back to the back and make sure everything was fine.
“It didn’t affect my game after that.
“I was checked for multiple things and I passed them all, that’s why I was able to come back and finish the half.”
Game 3 takes place on Sunday at Quicken Loans Arena with tip-off at 1.30am UK time.