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2025 fantasy football FLEX rankings - Week 18 start, sit FLEX rankings. Win more with our updated FLEX fantasy football rankings and tiers for Week 18.
Deciding between players with similar outlooks at different positions is never easy, so we're here to help you make those tough calls. Check out our Week 18 fantasy football FLEX rankings for 2025 to crush your final lineup decisions of the season. Below, you will see where key RBs, WRs, and TEs like Audric Estime, Chimere Dike, Parker Washington, Luther Burden III, Brenton Strange, RJ Harvey, Dylan Sampson, and more stand for the 18th and final slate of the NFL season.
Our FLEX fantasy football rankings for Week 18 are put together by Nick Mariano. Below the rankings, you will also find a summary of the important fantasy football news for this week. There are always key injuries and developments to keep track of, so check back throughout the week for updates.
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Editor's Note: Stay on top of your draft prep with RotoBaller’s fantasy football rankings, featuring expert analysis, ADPs, and draft insights for both PPR and non-PPR leagues.
Week 18 Fantasy Football FLEX Rankings
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Week 18 Fantasy Football FLEX Rankings Outlooks
Dalton Kincaid, Buffalo Bills
Buffalo Bills tight end Dalton Kincaid (knee) was listed as a limited participant in Wednesday's practice due to his knee injury. Kincaid was unable to play in Sunday's one-point loss to the visiting Philadelphia Eagles due to his knee injury, but it's a good sign that he's limited in the first practice of Week 18. However, the Bills may decide to rest key starters this weekend against the division-rival New York Jets, including quarterback Josh Allen (foot), so Kincaid might not be all that attractive for fantasy managers if he's healthy enough to return to action this weekend.
Fellow TE Dawson Knox (knee) is also managing a knee injury and was limited in Wednesday's practice. Despite missing several games this year with knee and hamstring injuries, Kincaid is Buffalo's second leading receiver with 36 catches for 523 yards and a team-high five touchdowns.
Theo Johnson, New York Giants
New York Giants tight end Theo Johnson (illness) was one of three Giants players either sent home or absent from Wednesday's practice with an illness. Johnson missed the team's Week 17 win over the Raiders after not practicing at all with what is presumed to be the same illness.
Fantasy managers still playing for a Championship in Week 18 will need to monitor New York's injury report, as Johnson and the Giants face a Cowboys defense in the season finale that has allowed 34 or more points in three of the last four games. With New York still competing under interim head coach Mike Kafka, their offense could continue to provide fantasy relevance at a time when many other teams are resting starters.
Jaylen Waddle, Miami Dolphins
Miami Dolphins wide receiver Jaylen Waddle (ribs) is not practicing on Wednesday due to a rib injury, according to Omar Kelly of the Miami Herald. Waddle is in danger of missing the Week 18 regular-season finale this Sunday against the division-rival New England Patriots after injuring his ribs in the Week 17 win over the Tampa Bay Buccaneers. The 27-year-old was able to return to Sunday's game, but he played only 26% of the offensive snaps and finished the day with zero catches on one target.
However, Waddle is just 90 yards shy of his third career 1,000-yard season, so perhaps that will give him the motivation to play this weekend in New England. If Waddle does not play in Week 18, Malik Washington and Theo Wease Jr., who had a long touchdown last weekend, would be more involved in Miami's passing attack.
Wan'Dale Robinson, New York Giants
New York Giants wide receiver Wan'Dale Robinson (ribs) was not present at Wednesday's practice after sustaining a rib injury in a Week 17 win over the Raiders in which he caught a season-high 11 passes for 113 yards. In Sunday's week-winning effort, Robinson also eclipsed the 1,000-yard mark for the first time in his career, and he now sits only eight receptions shy of 100.
If he can clear the injury report to suit up against the Cowboys' worst pass defense in the league in Week 18, it seems likely the team will make every effort to get him to that milestone. Fantasy managers still playing for a Week 18 title will need to monitor the Giants' practice reports this week, but if Robinson plays on Sunday, he is a must-start.
Stefon Diggs, New England Patriots
New England Patriots wide receiver Stefon Diggs is expected to play in a Week 18 game against the Dolphins, days after being charged with felony strangulation or suffocation and misdemeanor assault and battery. The Patriots released a statement on Tuesday, showing support for their 32-year-old receiver, and with Diggs' arraignment not scheduled until January 23rd, it does not appear that any punishment or suspension is imminent. Diggs enters the week with 82 receptions and 970 yards, and with contract incentives for both 90 receptions and 1,000 yards, it would come as no surprise if he is heavily involved on Sunday.
The number one seed in the AFC is still in play for the Patriots, and they are expected to play their starters, so their final game against Miami is one to be looked at by any fantasy managers still playing for a Week 18 championship.
Xavier Worthy, Kansas City Chiefs
Kansas City Chiefs wide receiver Xavier Worthy (illness) will miss his team's practice on Wednesday, per Pete Sweeney of The Kansas City Star. The 22-year-old has had a disappointing 2025 season overall, recording 42 receptions for 532 yards and a touchdown on 73 targets across 14 games. However, he profiles as the Chiefs' WR1 with Kansas City wideouts Rashee Rice (concussion) and Tyquan Thornton (concussion) both on Injured Reserve.
Worthy failed to take advantage of his first opportunity without Rice and Thornton in Week 17, recording zero catches on three targets against the Denver Broncos. The Chiefs have an easier matchup in Week 18 against the Las Vegas Raiders. Still, the Kansas City passing game is difficult to trust with third-string quarterback Chris Oladokun in line to make his second straight start under center. If active, Worthy profiles as a deep-league flex option at best in Week 18.
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