Ryan Tannehill solid, Blaine Gabbert shaky

Two young quarterbacks were on the field Friday night in Jacksonville. One, Miami’s Ryan Tannehill, was pretty good. The other, Jacksonville’s Blaine Gabbert, was pretty bad. Tannehill went 5-of-9 for 75 yards, with no interceptions, and he finished in style, hitting tight end Dustin Keller on a 22-yard touchdown pass that turned out to be…