NFL X Factors: Marvin Harrison Jr. and Mike Evans Headline 32-Team Preview

Marvin Harrison Jr. saw 78.6% of targets from out wide over two seasons, making him a primary X factor for the Arizona Cardinals.

The 2026 NFL season begins in six days with analysts identifying 32 X factors—one for each franchise—who possess the individual ability to dramatically swing their team's success. Last year's list featured Seattle Seahawks running back Kenneth Walker III, who earned Super Bowl MVP honors, alongside Dallas Cowboys receiver George Pickens and New England Patriots wideout Stefon Diggs. Conversely, Buffalo Bills receiver Keon Coleman, Pittsburgh Steelers tackle Broderick Jones, and Tampa Bay Buccaneers linebacker SirVocea Dennis were identified as key factors whose 2025 seasons trended negatively. The 2026 selection criteria strictly exclude all quarterbacks and coaches, as well as every rookie, to focus on non-obvious contributors.

Arizona and Los Angeles Defensive Anchors

Arizona Cardinals wide receiver Marvin Harrison Jr. enters the season under new head coach Mike LaFleur following a collegiate career defined by elite route running. Over the last two seasons, Harrison Jr. ranked 24th among 106 receivers by receiving 78.6% of his targets from out wide, while his 13.1 air yards per target ranked 17th. The Cardinals roster currently features safety Budda Baker and edge rusher Josh Sweat as established defensive starters, while the offense relies on tight end Trey McBride, Michael Wilson, and third-overall pick Jeremiyah Love from Notre Dame.

In Los Angeles, the Rams defense features Myles Garrett, Aaron Donald, Kobie Turner, and Byron Young on the defensive line. The secondary consists of Trent McDuffie, Jaylen Watson, Kam Curl, and Quentin Lake. Linebacker Nate Landman serves as the unit's X factor after signing a one-year deal in March 2025 and earning a three-year extension eight months later. Landman is expected to be the primary defender in dime personnel packages designed to stop short passing attacks targeting backs and tight ends.

San Francisco and Seattle Roster Shifts

San Francisco 49ers receiver Mike Evans, who stands 6-foot-5 and weighs 230 pounds, enters his age-33 season as a critical red zone mismatch. Evans ranks third among all receivers over the past two years in yards per route run on deep, in-breaking routes at 6.1. However, the 49ers face depth challenges after Ricky Pearsall was ruled out for the year with a right UCL tear. Evans dealt with a hamstring injury in 2025 and missed time in the most recent camp due to a quad strain in July and subsequent groin issues. The veteran joins a receiving corps that includes Deebo Samuel Sr., Demarcus Robinson, and rookie De’Zhaun Stribling.

Seattle Seahawks safety Ty Okada, an undrafted free agent from Montana State, moves into a starting role following a season-ending broken right ankle suffered by second-round pick Bud Clark in the second preseason game. The Seahawks secondary previously lost cornerback Riq Woolen to the Eagles and safety Coby Bryant to the Bears. Okada, now in his fourth year, must support a defensive backfield led by Devon Witherspoon, Nick Emmanwori, and Julian Love.

NFC East and North Personnel Battles

Dallas Cowboys left tackle Tyler Guyton secured his starting job so decisively that the team traded competitor Nate Thomas to the Houston Texans on cut-down day. Guyton has averaged 0.84 penalties per game since 2024, the third-highest rate among tackles, and has missed time with ankle, shoulder, and knee injuries. He protects Dak Prescott alongside right tackle Terence Steele. In New York, the Giants defense ranked 29th in EPA per rush and 31st in explosive rush rate allowed last season. Following the trade of Dexter Lawrence II, the Giants added 32-year-old nose tackle DJ Reader, whose 8.6% stop rate and 1.1% stuff rate last year were career lows.

Philadelphia Eagles interior linemen Landon Dickerson and Cam Jurgens both sought stem-cell treatment in Colombia during the offseason to address lingering injuries. Jurgens suffered from severe back issues, while Dickerson managed a right meniscus tear, ankle injuries, and back problems. Their health is vital after the Eagles' rushing attack dropped from 2.0 to 1.2 yards before contact per carry last season. In Washington, center Nick Allegretti takes over for the released Tyler Biadasz. Allegretti, who missed camp with a calf strain, has played only 171 of his 2,432 career snaps at the center position.

Chicago Bears tackle Ozzy Trapilo returned to practice on August 16 after rupturing his patellar tendon nine months ago during the wild-card round. He joins a line featuring Darnell Wright, Jonah Jackson, and Joe Thuney to protect Caleb Williams. Meanwhile, the Detroit Lions secondary faces significant injuries, with Kerby Joseph and Brian Branch on the PUP list. This forces 31-year-old Chuck Clark and 30-year-old Avonte Maddox into starting roles, while Rock Ya-Sin replaces the released Terrion Arnold at cornerback.