Power Rankings continue to fluctuate as the 2021 NFL season plays itself out. Entering Week 15, some NFC teams have improved their position while others have fallen. With just four games remaining in the regular season, here is how all of the NFC teams stack up in the Power Rankings this week.NFC Power Rankings: Teams struggling the most#16 - Detroit Lions (1-11-1)Last week: #16Next Week: vs. Arizona CardinalsDetroit Lions head coach Dan CampbellThe Detroit Lions remain the easy choice for last place in the Power Rankings. They still have the worst record in the NFL, but at least they are no longer winless. They do continue to battle and play competitively under the guidance of head coach Dan Campbell and quarterback Jared Goff. Nine of their 13 games have been decided by ten or fewer points.#15 - Chicago Bears (4-9)Last week: #15Next Week: vs. Minnesota VikingsKevin Wells@Wells15KevinA photo to sum up the Matt Nagy era. #Bears11:16 AM · Dec 12, 20214228582A photo to sum up the Matt Nagy era. #Bears https://t.co/RmRAp6f9S8After winning three of their first five games for a solid start to the 2021 NFL season, the Chicago Bears have now lost seven of their last eight games. They are firmly planted towards the very bottom of the Power Rankings. Head coach Matt Nagy is likely going to be fired at the conclusion of the season.Also read: NFL Rumors: Matt Nagy won't be fired this season despite bad run of games#14 - New York Giants (4-9)Last week: #12Next Week: vs. Dallas CowboysJoe Judge and Daniel Jones of the New York GiantsThe New York Giants are having another disappointing season under head coach Joe Judge, who now has a 10-19 career record. Quarterback Daniel Jones could miss the rest of the season with a neck injury, which makes some wonder whether he has started his last game for the Giants.#13 - Carolina Panthers (5-8)Last week: #13Next Week: vs. Buffalo BillsDov Kleiman@NFL_DovKleimanOh, no.. Cam Newton throws a 67-yard pick 61:57 AM · Dec 12, 202126446Oh, no.. Cam Newton throws a 67-yard pick 6https://t.co/4fvSeXCY7kThe Carolina Panthers continue to plummet their way down the power rankings. Since Cam Newton returned as the starting quarterback, they have lost three consecutive games. Firing young offensive coordinator Joe Brady didn't appear to make much of a difference.Also Check Out: Complete NFL Week 15 TV Schedule