LEXINGTON, Ky. — Tre Mitchell scored nine of his season-high 22 points in overtime, leading No. Mitchell, a transfer from West Virginia, hit back-to-back 3-pointers to open Kentucky’s scoring in overtime, and the Wildcats outscored the Hawks 19-11 in the extra period. … If they leave me open, I’m going to keep shooting it.” Calipari wasn’t surprised by the showing …