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Fantasy football start em, sit em MNF lineups advice for Dolphins vs. Steelers on Monday Night Football in Week 15 (2025). NFL matchups analysis and MNF starts/sits.
The final game of Week 15 brings two AFC teams who are vying for playoff spots together. Miami is riding hot after a tough start to the season, while the Steelers have been one of the most inconsistent teams in the league this year. Either way, this matchup will decide who moves forward in the fantasy football playoffs in many leagues. We're here to help you make those tough start-sit calls!
Below, read about the fantasy football outlooks for key players like Jaylen Waddle, DK Metcalf, Jaylen Warren, Kenneth Gainwell, Aaron Rodgers, Tua Tagovailoa, Jaylen Wright, Pat Freiermuth, and more. Which Dolphins and Steelers players should you start or sit in Week 15?
We will bring you Monday Night Football analysis all season, focusing on who to start, who is on the fence, and who should find the bench. Good luck in Week 15, RotoBallers!
Be sure to check all of our fantasy football rankings for 2025:- 2025 fantasy football rankings
- Running back (RB) rankings
- Wide receiver (WR) rankings
- Quarterback (QB) rankings
- Tight end (TE) rankings
- Defense (D/ST) rankings
- Kicker (K) rankings
- FLEX rankings
- Dynasty rankings
Miami Dolphins at Pittsburgh Steelers
Monday, December 15, 8:15 PM ET
Matchups We Love
Jaylen Waddle hasn't been the most consistent fantasy WR in recent weeks. But after scoring 18.1 PPR fantasy points last week against the Jets, Waddle will be a high-end WR2 option this week. The Steelers have given up the fifth-most fantasy points, most receptions, and second-most receiving yards to opposing WRs this season. That's enough reason to start Waddle in all formats.
There's no doubt that Darren Waller will be a riskier TE option this week. He only caught one pass for 13 yards last week, and ran just 12 routes in that contest. However, he could be worth a look in some 18-plus team leagues. The Steelers have allowed the third-most receiving touchdowns to TEs this season, which included letting Likely score a touchdown last week.
Darren Waller has another touchdown!
NYJvsMIA on ESPN
Stream on @NFLPlus and ESPN App pic.twitter.com/8BjLneLHIo— NFL (@NFL) September 30, 2025
Matchups We Hate
None
Other Matchups
Tua Tagovailoa should be avoided in most Superflex leagues this week. He has scored under 10 fantasy points in three straight games and hasn't finished inside the top-18 at the QB position since Week 8. Even though Pittsburgh has allowed a QB to score over 17 fantasy points in three consecutive games, Tagovailoa is a low-end QB2.
Aaron Rodgers had one of his better fantasy performances last week, scoring 21.5 fantasy points. Nevertheless, Rodgers will be more of a low-end QB2 in Week 15 against the Dolphins. Miami has played better defensively over the past month, and Rodgers has scored under 13 fantasy points in four of his last five starts.
De'Von Achane is currently dealing with a rib injury that he suffered in last week's win. Assuming he suits up in Week 15, though, Achane will remain a must-start RB1 in all formats. He ranks as the RB4 in fantasy points per game this season.
Steelers RBs
Both Jaylen Warren and Kenneth Gainwell will enter flex territory in Week 15. Warren has scored over 12 PPR fantasy points in three straight games, and Gainwell has scored over 16 PPR fantasy points in three of the last four weeks. However, both might be harder to trust this week, given that Miami hasn't allowed one RB to total over 14 PPR fantasy points in a game since Week 7.
WR DK Metcalf
DK Metcalf had his best receiving production of the year last week. He caught seven passes for 148 yards and saw a season-high 12 targets against the Baltimore Ravens. However, Metcalf will be more of a WR3 this week. The veteran has been inconsistent throughout the fantasy season, and the Dolphins have allowed the third-fewest receiving yards to WRs in 2025.
RODGERS TO DK FOR 55.
PITvsBAL on CBS/Paramount+https://t.co/HkKw7uXVnt pic.twitter.com/bLKPYKWqQs
— NFL (@NFL) December 7, 2025
Miami Dolphins Start/Sit Matchups
See the full stats in our Fantasy Football Matchup Ratings Projections
| Player | Start/Sit | Matchup Rating ▾ |
Game Matchup |
| De'Von Achane, RB | Start | 119.5 | @ PIT |
| Jaylen Waddle, WR | Start | 111.7 | @ PIT |
| Miami Dolphins, DEF | Risky Start | 103.7 | @ PIT |
| Riley Patterson, K | Risky Start | 102.7 | @ PIT |
| Darren Waller, TE | Risky Start | 102.6 | @ PIT |
| Tua Tagovailoa, QB | Risky Start | 102.3 | @ PIT |
| Malik Washington, WR | Sit | 101.4 | @ PIT |
| Greg Dulcich, TE | Sit | 101.1 | @ PIT |
| Jaylen Wright, RB | Sit | 100.9 | @ PIT |
| Ollie Gordon II, RB | Sit | 99.9 | @ PIT |
| Julian Hill, TE | Sit | 97.9 | @ PIT |
| Nick Westbrook-Ikhine, WR | Sit | 97.7 | @ PIT |
| Dee Eskridge, WR | Sit | 97.1 | @ PIT |
| Cedrick Wilson Jr., WR | Sit | 95.8 | @ PIT |
| Zach Wilson, QB | Sit | 92.3 | @ PIT |
Pittsburgh Steelers Start/Sit Matchups
See the full stats in our Fantasy Football Matchup Ratings Projections
| Player | Start/Sit | Matchup Rating ▾ |
Game Matchup |
| DK Metcalf, WR | Start | 110.9 | vs. MIA |
| Jaylen Warren, RB | Start | 106.7 | vs. MIA |
| Kenneth Gainwell, RB | Risky Start | 103.6 | vs. MIA |
| Aaron Rodgers, QB | Risky Start | 102.8 | vs. MIA |
| Pittsburgh Steelers, DEF | Risky Start | 102.3 | vs. MIA |
| Chris Boswell, K | Risky Start | 102.2 | vs. MIA |
| Jonnu Smith, TE | Sit | 101.1 | vs. MIA |
| Pat Freiermuth, TE | Sit | 100.3 | vs. MIA |
| Darnell Washington, TE | Sit | 100.2 | vs. MIA |
| Calvin Austin III, WR | Sit | 100.1 | vs. MIA |
| Roman Wilson, WR | Sit | 98.5 | vs. MIA |
| Marquez Valdes-Scantling, WR | Sit | 97.1 | vs. MIA |
| Adam Thielen, WR | Sit | 97 | vs. MIA |
| Ben Skowronek, WR | Sit | 96 | vs. MIA |
| Mason Rudolph, QB | Sit | 95.4 | vs. MIA |
| Kaleb Johnson, RB | Sit | 95.1 | vs. MIA |
| Connor Heyward, TE | Sit | 93.8 | vs. MIA |
Who Should I Start Tool
Not sure who to start? Check out the Who Should I Start tool:
Compare up to four players and we'll tell you who to start...
Who Should I Start? Who Should I Sit? Some common Week 15 fantasy football lineup decisions are regarding players like Jaylen Waddle, DK Metcalf, Jaylen Warren, Kenneth Gainwell, Jaylen Wright, Pat Freiermuth. But not to worry, we are here to help make these decisions and build winning lineups in Week 15.
Week 15 Player Decisions. Set your optimal fantasy football lineups for Week 15 of the 2025 NFL season. Our free Who Should I Start? tool will help make your fantasy football lineup decisions. Compare up to four NFL players, and we tell you who to start... all free! Get your winning lineups set, and make the right decisions.
Using The Tool. This is a simple tool but very powerful. The first step is to enter the player names that you want to compare. In the first box, search for the first player's name. In the second box, search for the second player's name. Compare up to four NFL players at once, and then click the Who To Start? button to see who the recommended starts are based on weekly fantasy football matchups.
Improvements For Who Should I Start? You may have noticed, we've added lots of great features for you to give you as much information as possible to win your fantasy football matchups each week. You'll see NFL player tiles with headshots and bye weeks, enhanced search results with data to compare, and a slick new interface. We hope you enjoy!
How It Works. Each week, our RotoBaller staff puts together their weekly fantasy football rankings and projections based on their research. That information is the core data that is powering the decision-making in this tool. When you search for player names, you will only see those players who are ranked. If someone is out for the week, they will not appear in the search results.
Scoring Formats. Fantasy football managers play in various types of leagues, and this tool allows you to choose whether it's PPR scoring, Half-PPR scoring, or Standard (Non-PPR) scoring. The second thing you want to do is to select the scoring format. There are three small radio buttons (small circles), so click on the scoring format you prefer. The results may vary based on the scoring format you select.
Popular Week 15 Searches. Curious to see some tough lineup decisions for Week 15 (2025)? Below you will find a list of some popular Who Should I Start? searches that RotoBaller readers are looking at this week. Click any of the links to see the result and recommendation.
Popular Week 15 Searches - Start/Sit Player Comparisons
Below are some popular Week 15 searches and comparisons from our 'Who To Start' tool:
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