Fernando Mendoza Is the Raiders' Starter After the Kirk Cousins Trade: The Fantasy Read on Brock Bowers and Ashton Jeanty Against Seattle

The Fernando Mendoza era starts now. The Las Vegas Raiders named the No. 1 overall pick in the 2026 NFL Draft their starting quarterback this week after trading Kirk Cousins to Minnesota for a 2027 third-round pick at Tuesday's deadline. Mendoza's first career start comes Sunday at Allegiant Stadium against the reigning Super Bowl champion Seattle Seahawks.

For fantasy managers, the question is simple: what happens to Brock Bowers, Ashton Jeanty and the rest of the Raiders' skill players when a rookie takes over against one of the best defenses in football? The short answer is that Bowers is still a weekly starter, Jeanty's outlook was already cloudy, and nobody else on this offense belongs in a Week 10 lineup.

Why the Raiders made the move now

Cousins gave Las Vegas a fast start. The Raiders won their first two games, including a comeback win over New Orleans, before a four-game losing streak. They snapped the skid with a 38-33 comeback win over the Jets, then lost 38-17 to San Francisco in Week 9, a game in which Cousins threw three interceptions.

Head coach Klint Kubiak had said before the deadline that Cousins would remain the starter. Once a contender offered a third-round pick, though, the math changed. The Raiders got real draft capital for a 38-year-old on a short-term deal, and they get nine games of live evaluation on the quarterback they drafted to build around.

Kubiak said Mendoza had exceeded the team's expectations in practice, pointing to improvements in his accuracy, his command of the offense, his operation in and out of the huddle and his work in the two-minute drill. That is coach speak, but it is also a specific list, and it suggests the staff believes he is ready to run the full offense rather than a reduced menu.

The matchup could not be much tougher

There is no gentle introduction here. Seattle won the Super Bowl last season, and its defense is again one of the league's most feared units. Previews of Sunday's game describe a ferocious Seahawks front facing a Raiders offense that has two excellent tight ends and very little in the way of a running game.

Rookie quarterbacks making their first start against an elite pass rush tend to do two things: they hold the ball too long and they check down. The first leads to sacks and turnovers, which helps Seattle's fantasy defense. The second helps tight ends, which brings us to Bowers.

Fantasy fallout, player by player

Brock Bowers, TE: Bowers ranks ninth in the NFL in receiving yards and has six touchdowns, a red-zone role few tight ends can match. A rookie quarterback may lower his yardage ceiling in the short term, but it should not cut his target share. Young quarterbacks look for the biggest, most reliable target in the middle of the field, and that is Bowers. He stays locked in as a TE1, even in a tough matchup.

Ashton Jeanty, RB: Jeanty has been a disappointment, and the quarterback change does not fix his problem. One report notes his role appears to be shrinking under Kubiak in favor of Mike Washington Jr., and the Raiders' run game has struggled to create space regardless of who carries the ball. Against Seattle, with a likely negative game script, Jeanty is a low-end flex at best. Managers who drafted him early should be shopping him for anything with a clearer path to touches.

Tre Tucker, WR: Tucker emerged as Cousins' most reliable downfield option, and that chemistry does not transfer automatically. He is a boom-or-bust WR4 with a rookie under center and should stay on benches this week.

Michael Mayer, TE: The second tight end has a real role in this offense, but not enough to start in fantasy outside of very deep or two-tight-end formats.

Jalen Nailor and Jack Bech, WR: Both are part of the rotation. Neither is startable until Mendoza shows who he trusts.

Fernando Mendoza, QB: Not a Week 10 start in one-quarterback leagues. In superflex and dynasty formats, he becomes a priority add if he is still on waivers. The opponent this week makes him a bench stash, but the runway for the rest of the season is his.

Betting angle

The quarterback switch matters most for the totals. The Raiders' offense with Cousins scored 33 or more points twice this season. With a rookie making his debut against an elite defense, expect books to set a conservative Raiders team total. The under on Las Vegas points and the Seahawks' defensive props (sacks, interceptions) are the natural angles.

The spread is harder. Home rookies in their first start sometimes surprise, and the Raiders' defense has been competitive at times. But Seattle's defense is built to exploit exactly the mistakes a first-time starter makes. The model's view on the game will appear on the NFL predictions page and in the Week 10 picks.

Dynasty and rest-of-season view

This is the part that matters for long-term rosters. Mendoza won the Heisman Trophy and a national title at Indiana before going first overall, and the Raiders are now committed to giving him the rest of 2026 to grow. That is good news for Bowers in dynasty formats: he gets a young quarterback who should be in place for years.

For redraft managers, the first two starts will be bumpy. Bye-week planning matters, and anyone relying on Raiders wide receivers should look elsewhere. The real buying window for Mendoza in superflex leagues may come after a rough debut, when his price drops.

What's next

Watch the Raiders' practice reports for any changes to the backfield workload and for Bowers' health. If the coaching staff leans on short, quick throws to protect its rookie, Bowers could see a season-high target total. If Mendoza struggles early, the Raiders may simplify further and hand the ball to Washington.

The bottom line: start Bowers, sit the rest of the Raiders, and pick up Mendoza in superflex and dynasty leagues if he is somehow still available.