The Jaguars enter Sunday’s regular season finale at Tennessee with the fourth-most rushing yards (2,179) and second-most carries (503) in franchise history. So why does it seem as if the running game is broken? The Jaguars lead the NFL in attempts (33.5) and yards (145.3) per game. So why does it appear as if defenses have figured them out over the last month? Rookie Leonard Fournette is 29 yards away from becoming the Jaguars’ first 1,000-yard rusher in six years. So why does it look as if Fournette is equal parts finding no running room and is lacking his pre-injury burst. Because the eyes and data are not lying. Reliable for most of the first 10 games, the Jaguars’ run-game production has dipped over the last five weeks. Sure, defenses continue to dabble with extra players in the box, but the crispness of the Jaguars’ blocking and the efficiency of their tailbacks have tailed off. The Jaguars averaged 160.6 yards in their first 10 games, well ahead of second-place Philadelphia (144.6). In the last five games, the Jaguars’ 114.6-yard average is 16th in the NFL. The Jaguars averaged 4.6 yards per attempt (fourth-best) in the first 10 games, but 3.7 yards (26th) in the last five games.