Bryce Harper spotted wearing knee brace

A picture of the Washington Nationals' Bryce Harper wearing a knee brace at Atlanta's Hartfield International Airport has many fans worried about the nature of his injury.

After visiting his doctor, orthopedist James Andrews, on Monday, the Nationals' outfielder tweeted that it was "all good." But, after a photo of Harper wearing a brace was tweeted by a fan, many wondered if Harper's enthusiastic tweet might've come too early.

Harper, 20, has been injured ever since he ran into the outfield wall at Dodger Stadium on May 13. After the collision he promised fans he'd continue to play even if it killed him.