Florida had Tennessee on the ropes on Saturday night in Neyland Stadium but could not finish the deal and ultimately lost in overtime. Part of the reason the Gators blew a double-digit lead was because starting quarterback Graham Mertz was lost to a non-contact injury in the third quarter. The former Wisconsin transfer — and Kentucky transfer target — will now miss the rest of the season. The super senior is out for the season with six games to play. Florida will turn to five-star true freshman DJ Lagway when Kentucky rolls into town this weekend. Graham Mertz’s season finishes with some good …