After a promising 3-0 start, the Dolphins crashed down to Earth and finished the 2018 season at 7-9.
Part of the reason for the season collapse was how poor the offensive line was playing. In total the team allowed 52 sacks, tied for 5th most in all of the 2018 regular season. In terms of quarterback hits—which include sacks—the Dolphins allowed 38 QB hits in the first 8 weeks of the season before wrecking that number in weeks 9-16, allowing 65 QB hits.
Those 65 QB hits were the most allowed by any team in that stretch.