The Dolphins are currently 7-7 and second in the AFC East. They have a very slim chance to make the playoffs if they win and a number of other teams lose. In other words, they are playing to make the playoffs even though a miracle is needed. The Jacksonville Jaguars are playing because the NFL requires teams to play all 16 games on their schedule.
The Dolphins rank 29th in the NFL in yards gained from scrimmage. To continue, they rank 30th in net yards allowed on defense. They rank 24th in passing yards allowed and 31 in rushing yards allowed.