Exavier Prente "Nook" Logan (born November 28, 1979) is a former Major League Baseball center fielder.

Although he was expected to compete for the center field job in 2006, Logan was beaten out by Curtis Granderson and was subsequently injured upon arrival in the minors.

In June, his baserunning blunder that ended a game against Cleveland inspired perhaps the most memorable radio call in the career of broadcaster Charlie Slowes.

On December 13, 2007, Logan was identified in the Mitchell Report as a client of Kirk Radomski, who distributed banned performance-enhancing substances to MLB players.

He has since spoken of the Mitchell Report as having had a "huge impact" on his ability to sign on with another Major League Baseball club.