GAINESVILLE, Fla. — Florida Gators starting quarterback Graham Mertz was sidelined late in the third quarter of Florida’s season-opening game against the Miami Hurricanes. Mertz was hit just after throwing, a pass that was intercepted just short of the end zone. Mertz immediately showed signs of pain and Florida Senior Director of Sports Health, Paul Silvestri was quick to get out to the senior quarterback. After getting Mertz to his feet, Silvestri led the quarterback directly to the Florida locker room. Mertz and the Florida offense was having little success against the Miami Hurricanes. Mer…