GAINESVILLE, Fla — The Florida Gators notched their first SEC win of the season behind 503 yards of total offense and record-setting performance by UF’s two-QB tandem of Graham Mertz and DJ Lagway. They held the team build a three-touchdown lead twice en route to a 45-28 victory. They finished a combined 26-of-28 (92.8%, UF single-game record) for 277 yards, connecting with 10 different receivers. Mertz threw the only two incompletions (19-of-21, 201 yards, three TDs) to post the third-highest completion percentage (90.5%) by a Gator ever while Lagway went a perfect 7- for-7 for 76 yards. Flor…