NFL to scold Robert Griffin III over concealed Nike logo

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Robert Griffin III's "Heart" message concealed a Nike logo. (Robert Martinez/Getty Images)

A doctor who performed surgery Robert Griffin III's knee says his recovery is unbelievable. (Robert Martinez/Getty Images)

Robert Griffin III enjoyed one of the NFL's best debuts for a rookie quarterback on Sunday, but the NFL isn't entirely pleased with him.

Griffin wrote "Heart" on the left side of his undershirt worn on the field prior to the Redskins-Saints game on Sunday. Whether or not the personalized message was intended to inspire his game or help one of his marketing partners is up for debate.

The "H" in "Heart" was drawn wide enough to cover the Nike logo. Nike is the NFL's official apparel provider. Griffin has signed to endorse adidas, Nike's competitor.

Players are not allowed to cover up Nike's swoosh, but can wear other brands if they are official NFL licensed providers.

Griffin, like most highly drafted NFL rookies, has been educated on the league's brand protocols.

NFL spokesman Brian McCarthy told that league officials would talk to Griffin.