MEN'S COLLEGE BASKETBALL: Florida upends No. 2 Tennessee behind Colin Castleton

  • Tennessee guard Zakai Zeigler drives under pressure from Florida forward Colin Castleton during Wednesday's game in Gainesville. (ALAN YOUNGBLOOD/Associated Press)
    Tennessee guard Zakai Zeigler drives under pressure from Florida forward Colin Castleton during Wednesday's game in Gainesville. (ALAN YOUNGBLOOD/Associated Press)

    GAINESVILLE — Colin Castleton is accustomed to being double-teamed every time he touches the ball, so he was pleasantly surprised — maybe even downright stunned — when Tennessee opted to guard him wit…