**QB situation: **Matt Moore is expected to start at QB for Miami. Moore had a 106.5 passer rating in three starts this season, while Ryan Tannehill had a 93.5 passer rating.
**Powerful pass rush: **Cameron Wake has 10 sacks over his last 10 games, and Ndamukong Suh finished with 5.0 sacks and 17 QB hits in 2016.
**Miami's strength: **Jay Ajayi has the most rush yards in the NFL since Week 6 and led the NFL in yards after contact this season (783).
**Miami's weakness: **The Dolphins allowed 4.8 yards per carry in the regular season (31st in NFL).
**X-factor: **Kenny Stills has six TD receptions of 25+ air yards this season (most in NFL). The Steelers have allowed just 40 passes of 20+ yards this season (T-3rd fewest in NFL).