In his two preseason outings, Gabriel completed 25 of 37 passes for 272 yards with one touchdown and one interception.It is easy to see why the Browns benched Flacco. Among the 33 quarterbacks who have made at least 56 pass attempts, the 40-year-old is last in the league with a 60.3 passer rating, has the second-worst completion rate (58.1%) and his six interceptions are second most.The 18-year veteran completed only 16 of 34 passes for 184 yards, two interceptions and a fumble in last Sunday’s 34-10 loss to Detroit. The Browns offense is ranked 27th in total yards (279.8 yards per game), 20th in passing (195 yards per game) and 30th in rushing (84.8 yards per game).