Johnny Manziel leaves second AAF game after suffering concussion while trying to make tackle

Johnny Manziel was forced to leave Saturday's game. (David Kirouac/Icon Sportswire via Getty Images)

Johnny Manziel was forced to leave an Alliance of American Football game between the Memphis Express and the Orlando Apollos on Saturday after suffering a concussion while trying to make a tackle.

Manziel threw an interception and then, while trying to down the runner, dove head first, somehow colliding instead with a teammate’s knee. He was down for a few moments, barely moving until being helped by the Express training staff off the field.

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The former Heisman Trophy-winning quarterback was later ruled out for the rest of the Express’ 34-31 loss to the Apollos. The cameras caught him in the second half eating on the sidelines.

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Saturday was Manziel’s second appearance for the Express since he signed with the team following his departure from the Canadian Football League. In those two appearances, he’s gone 5-for-8 with 61 yards and one interception.