Nick Bosa Will Play the Rams on a Repaired Knee

Raheem Morris said Nick Bosa will play Thursday against the Los Angeles Rams in Melbourne. The 49ers defensive coordinator did not hedge.

“Nick Bosa is going to play. We’re not trying to hide that.” That sentence, delivered in Australia on Tuesday local time, puts a three-time ACL patient on the field 354 days after he tore the right one in Week 3 last season.

Raheem Morris Stopped Hiding the Plan

Kyle Shanahan had kept the Week 1 participation report until Wednesday morning in Melbourne. Then Morris said the quiet part in public. The league later posted that Bosa will play against the Rams at the Melbourne Cricket Ground, with kickoff is 5:35 p.m. Pacific on Thursday, Sept. 10 (10:35 a.m. Friday, Sept. 11, in Melbourne) on Netflix.

Nick Bosa is going to play. We’re not trying to hide that.

Raheem Morris, 49ers defensive coordinator, in Melbourne

Bosa, 28, returned to full team work on Sept. 2, the same day the 49ers flew out of San Francisco. That session was his first full practice since the right ACL tear against Arizona on Sept. 21, 2025. After it, he said the day had gone “pretty good.” He was on the Melbourne practice field again after Morris spoke.

The 49ers named him one of eight captains for a fourth season. Teammates voted him in before anyone had seen him rush a quarterback in 11 months. The vote is a leadership note. It is not a medical file.

20 Sacks and a Pass Rush That Vanished

San Francisco went 12-5 last season and still finished last in the NFL with 20 sacks in 17 games. Myles Garrett, then in Cleveland, had 23 by himself. Bosa managed 2.0 sacks before the knee gave out, which ranked fourth on his own team.

His Pro Football Reference log shows 119 defensive snaps across three games. He was still working in the 80s as a share of the defensive snaps until the Cardinals game ended in the first half.

THE 2025 SNAP LOG

In 2024 he played 693 snaps over 14 games, about 78% of the defensive work, and finished with 9.0 sacks. A healthy Bosa lives in that 74% to 78% band. Thursday will not look like that. The question is how far below it Morris is willing to go against Matthew Stafford.

The depth around him is thin enough that a limited Bosa is still the plan. Sam Okuayinonu is out with a foot injury. Mykel Williams, a young lineman who rehabbed in the same training room, remains on the physically unable to perform list after his own ACL. Bryce Huff, tied for the team lead with 4 sacks a year ago, is retired. The 49ers did not spend the offseason adding a proven edge who can carry a full Thursday night if the knee barks.

A Third ACL and a 354-Day Clock

This is Bosa’s third ACL surgery and the second on the right knee. He had the right one repaired as a high school senior at St. Thomas Aquinas in 2015. He tore the left ACL in Week 2 of 2020, played only two games that year, then came back and made five Pro Bowls. The 2022 season brought Defensive Player of the Year and 18.5 sacks. Career line since the 49ers took him No. 2 overall in 2019: 64.5 sacks, 168 quarterback hits, 278 tackles, 2 interceptions, and 13 forced fumbles in 85 games (83 starts).

The 2025 tear was a revision on the same right knee. Shanahan said days after the injury that the tear was “clean,” with no meniscus damage, and that he saw “zero worry or correlation” with the high school surgery. Orthopedic surgeons asked about that timeline did not agree.

Dr. Prem Ramkumar, a knee and hip surgeon who consults for the X Games, called a revision ACL a “very big deal” and a “different beast.” Dr. Nirav Pandya, a professor of orthopedic surgery at UCSF, put the ordinary first reconstruction at 9 to 12 months and the second surgery on the same knee at 12 to 18 months before the joint handles load the way it used to. If Bosa plays Sept. 10, he is at 354 days, about 11 and a half months.

THE ACL TIMELINE

1. 2015: Tears the right ACL as a high school senior in Fort Lauderdale and has it repaired.
2. Week 2, 2020: Tears the left ACL (and meniscus) and misses the rest of that season.
3. Sept. 21, 2025: Tears the right ACL again against Arizona, his third surgery, and is ruled out after 14 snaps.
4. Aug. 3, 2026: Last practice before patellar tendinitis shuts down football work for 30 days.
5. Sept. 2, 2026: Returns to full team practice, then boards the flight to Melbourne.
6. Sept. 10, 2026: Scheduled to play the Rams, 354 days after the latest tear.

Bosa opened up on a third ACL rehab during spring work in Santa Clara. He said the early weeks were grim in a way the 2020 rehab was not.

You start out wanting to quit, never play again, and never put your body in that position again. And then slowly you realize that you love this game and you want to get back to it.

Nick Bosa, 49ers defensive end, 49ers OTAs

He also said he had pushed every milestone “balls to the wall” in 2020 and paid for it with extra bumps. This time the graft came again from the patellar tendon, which “needed a little more time to kind of adapt.” In May he was talking about laying groundwork for a long season. By early August the football work had outrun the tendon.

WHERE EXPERTS DISAGREE

• Shanahan’s view: A clean revision, in his words, is “usually brand new after that,” which is why the club pointed Bosa at training camp and then at Australia.
• The surgeons’ view: Pandya said a second ACL on the same knee does not take load the way a first one does, and Ramkumar treated the revision itself as a different operation, not a repeat of 2020.
• The league baseline: A 2022 study in the Orthopaedic Journal of Sports Medicine found only 55.8 percent of NFL players returned after ACL reconstruction (174 of 312). Defensive linemen who did come back saw approximate value drop 76.2%, and snap counts across the sample fell from 619.0 to 259.0 in the three years after injury. Only 28.5% of eligible players were still in the league three years later.

Bosa is not a random name in that study. He is a No. 2 pick with a Pro Bowl history on the other knee. The study still describes the position he plays, and it does not describe a Thursday opener on a new continent as the easy version of a return.

The 16-Hour Flight Hits a Repaired Knee

The 49ers left the Bay Area on Sept. 2 and landed in Melbourne on Sept. 4, giving themselves a week to reset a 16-hour flight and a West Coast time gap. Bosa’s first full practice and that takeoff were the same day. He had spent 30 days on a tendinitis plan after he “ramped it a little too fast with the football stuff” at the start of camp, in his words. Shanahan called the inflammation a “normal thing” with ACL recoveries and said the medical staff had seen it in about 90% of the club’s own ACL cases.

The shutdown looks less like a late scare than a load dump before the longest regular-season trip the league has ever staged. That is a reasonable way to treat a revision knee. It is also why Thursday is a strange first game. He will have had a handful of team practices, a long-haul flight, a week of Melbourne sessions, and then a 10:35 a.m. local kickoff against a division rival. There is no preseason tape of him as a pass rusher in 2026. There is a brace.

The Rams chose the other itinerary. Sean McVay’s club planned to leave Los Angeles on Tuesday night, Sept. 8, and land a day before the game, treating the week like a normal Friday-to-Sunday turn. Stafford had joked months earlier about his back on a flight that long. The 49ers bet on acclimation. The Rams bet on routine. Bosa’s knee sits inside the 49ers’ bet, because he practiced, sat, practiced once, and then flew.

The venue is the 100,000-capacity Melbourne Cricket Ground, an oval that had to be fitted with an NFL field inside a cricket and Aussie-rules bowl. It will be the oldest stadium to host a regular-season NFL game. The crowd will be loud and far from the sideline. That does not change a graft. It does change how a player warms up, how long he stands, and how a coach counts snaps when the game is still in the first quarter and the legs are heavy.

Stafford Has Not Faced This Version of Bosa

The Rams won 42-26 in San Francisco in Week 10 last season. Stafford threw for 280 yards and 4 touchdowns that afternoon. He closed 2025 with 4,707 passing yards, 46 touchdowns, and 8 interceptions, and he was named league MVP. Puka Nacua caught 129 balls for 1,715 yards. Davante Adams is still there. Kyren Williams ran for 1,252 yards. McVay said he expects left tackle Alaric Jackson, Stafford’s blind-side protector, to be available Thursday.

That is the offense Bosa is being asked to bother on a short week, from the right side of a defense that spent 14 games last year without him. A year ago the Rams could scheme the 49ers’ rush as a committee. On Thursday they have to account for the one rusher who still tilts protections, even if he is on a pitch count.

WHAT BOSA WALKS INTO

• The quarterback: Stafford just threw 46 touchdown passes and will have a full offseason of the same skill players around him.
• The last meeting: Los Angeles already hung 42 points on this roster in Santa Clara in Week 10.
• The left tackle: McVay said Jackson should play, which means Bosa’s first rushes in 11 months likely go at a starter, not a fill-in.
• The clock: A Thursday kickoff after a 16-hour trip leaves almost no recovery day if the first series runs long.

Morris can still win the down without a sack. Quarterback hits, hurried throws, and a collapsed pocket for Fred Warner are the cheaper outputs if the knee is being counted. A 12.9-sack 17-game average is the healthy Bosa on paper. Thursday is not that player yet. It is a test of whether the 49ers can get two or three rushes an opening drive without putting 60 snaps on a graft that surgeons said may not like heavy load until winter.

Two More Practices for an Achilles Return

George Kittle is on a similar clock with a different tendon. He tore his right Achilles on Jan. 11, 2026, in a wild-card win over Philadelphia, then came off the physically unable to perform list on Aug. 23. Offensive coordinator Klay Kubiak said the club has to see how Kittle “gets through the rest of the week” with two practices left, and that “Kittle looks good.”

Kittle, 32, had 57 catches for 628 yards and 7 touchdowns in 11 games last season. Career: 595 catches, 8,008 yards, 52 touchdowns in 124 games (116 starts), and a seventh Pro Bowl. He is a captain too. If both stars play, San Francisco is rolling out a pass rusher 354 days after a revision ACL and a tight end about eight months after an Achilles tear, on the same Thursday, in the same stadium, after the same flight.

Kubiak did not stamp Kittle the way Morris stamped Bosa. That gap is the tell. Bosa is a yes. Kittle is a look. Christian McCaffrey’s practice load has been managed as a freshness plan rather than a new injury, which is a different kind of Week 1 math. The 49ers can survive a quiet Kittle night if Brock Purdy and McCaffrey are on schedule. They cannot survive a quiet pass-rush night in the same way, because 20 sacks is what that looks like over 17 games.

How Many Snaps Can That Knee Take?

Morris can say Bosa is playing and still keep him in the 20-snap range if the first series is ugly. He can also chase Stafford and discover, in real time, that a 30-day tendinitis break plus a 16-hour flight is a lot to ask of a patellar graft. The 49ers do not have a second Bosa. That is why the clearance is a roster decision as much as a medical one.

WHAT WE KNOW

• The stamp: Morris said Bosa will play, and the team is not treating him as a game-time mystery.
• The work: He returned to full practice on Sept. 2, flew that night, and was on the Melbourne field after the coordinator spoke.
• The hole: San Francisco had 20 sacks last season, last in the league, and several of those sack-getters are not on this trip.

WHAT IS UNCONFIRMED

• The snap count: Morris did not attach a number, a series limit, or a plan for third-and-long only.
• Kittle: Two practices still sit between “looks good” and a true active listing.
• The knee after kickoff: Tendinitis already stopped him once when football work jumped. Thursday is another jump.

The 100,000-capacity G will see a rusher in a brace, a Rams offense that just led the league in scoring, and a 49ers staff that decided 354 days was enough. Bosa said in the spring that the rest of his body felt “pretty darn good” and that his fingers had not felt this good in 20 years. The fingers are not the problem. The right knee is, and it gets its first live test on Friday morning in Melbourne.