Arizona Cardinals wide receiver Marvin Harrison Jr. had been looking forward to this one for weeks. A long-awaited return to Indianapolis, where his father, Marvin Harrison Sr., spent 13 seasons and became a legend. The younger Harrison admitted earlier in the week that stepping onto the same field where his dad’s name hangs in the Ring of Honor would be emotional. Still, he vowed to stay locked in on helping the Cardinals get a win. But then on game day, everything changed.

Late in the second quarter, Harrison came down hard after hauling in a catch, his helmet smacking the Lucas Oil Stadium turf with frightening force. He stayed down for several moments before heading into the blue medical tent. A few minutes later, he was escorted to the locker room. The team quickly confirmed what fans feared: he was being evaluated for a concussion.

Yes, as confirmed by ESPN’s Adam Schefter, the Cardinals have now downgraded WR Marvin Harrison Jr. to out due to a concussion. The Cardinals’ injury list keeps growing as the game goes on.

Wideout Michael Wilson briefly left with a finger injury before eventually returning, but the damage had already been done. Arizona’s receiving corps was running thin. With Marvin Harrison Jr., Travis Vokolek, and Emari Demercado all ruled out, the team was suddenly scrambling for answers.

In Harrison’s absence, veteran Zay Jones stepped up on the outside alongside Wilson. For Harrison Jr., the setting couldn’t have been more symbolic and painful. He was just six years old when his father, Marvin Harrison Sr., played his final game for the Indianapolis Colts in 2008.

Marvin Harrison Jr. on his father’s legacy

The city still means everything to the Harrison family. “A lot of good memories, good times,” the younger Harrison shared earlier in the week. “Obviously, I was a child, so I didn’t really remember having too much fun outside of just the games. But definitely a lot of memories.” One of those memories came in 2011, when Harrison Jr. was just nine years old.

That year, he watched the Colts induct his father into their Ring of Honor, a moment he still carries vividly. “That was just a good experience seeing a lot of 88 jerseys, seeing his name in the stadium. Definitely a cool experience for me,” he recalled. And while the parallels between their careers are striking, Harrison Jr. is writing his own version of the story.

Like his father, he was a first-round draft pick. Their rookie seasons? Nearly identical. Harrison Sr. posted 64 catches for 836 yards and eight touchdowns. His father had  62 catches, 885 yards, and eight touchdowns. Coaches can already see shades of the same relentless drive that made his father a Hall of Famer.

Harrison Jr. often stays late after practice, catching an extra 200 passes from the JUGS machine alongside teammate Michael Wilson. His dad was wired the same way—famously recalling in his Hall of Fame speech how coach Lindy Infante once told him, “I don’t like you guys catching passes. You make it look too easy.”

Now, nearly three decades later, that lesson echoes through his son’s development. But as much as Harrison Jr. honors the legacy, he’s determined to build his own.