LJ Martin’s injury is no longer a Friday-only problem.
ESPN’s Pete Thamel reported Wednesday that BYU’s senior running back is expected to miss four to six weeks with the lower-body injury he suffered at TCU. Martin was already listed out for Friday’s Iowa State game on the Big 12 availability report. The new timeline also rules out the easy hope that he could simply rest through Iowa State and return for Notre Dame.
BYU has not announced a diagnosis or its own return date. That distinction matters. The public timeline comes from ESPN’s sourced report, not a medical bulletin from the program, and rehabilitation does not obey a football calendar.
The schedule still tells us what changed. A four-week absence reaches the Utah game. Six weeks reaches through Baylor and toward Kansas week. BYU is no longer choosing a replacement for one night. It is deciding what its offense will be for the hardest part of the season.
What the reported timeline covers
Martin left BYU’s 17-10 win at TCU in the first quarter after two carries for 16 yards. Tuesday’s conference report listed him out against Iowa State. Thamel’s report then put the expected absence at four to six weeks and specifically included the Oct. 17 Notre Dame game.
Measured from the Oct. 7 report, four weeks lands Nov. 4 and six weeks lands Nov. 18. Those dates are reference points, not promises.
| Game | Date | Where it falls in the reported window |
|---|---|---|
| Iowa State | Oct. 9 | Martin is officially listed out |
| Notre Dame | Oct. 17 | Explicitly included in the ESPN report |
| at UCF | Oct. 24 | Inside the first four weeks |
| Arizona State | Oct. 31 | Inside the first four weeks |
| at Utah | Nov. 7 | Just beyond four weeks; no status should be assumed |
| Baylor | Nov. 14 | Inside six weeks; no status should be assumed |
| at Kansas | Nov. 21 | After six weeks from the report, without any guaranteed return |
That is a nasty stretch to discover a new offensive identity. Iowa State and Notre Dame come to Provo eight days apart. BYU then travels to UCF, returns for Arizona State and goes to Rice-Eccles Stadium for the Holy War.
The calendar invites fans to circle Utah as a possible return. Don’t. A reported range cannot tell us when Martin will practice, tolerate contact or be ready for a normal workload. It tells us only that BYU must prepare to play October without him and cannot build November plans around a hopeful date.
The football schedule will carry every official time and network assignment. The permanent Iowa State game center starts the replacement stretch Friday.
The backup production is real
This is not an empty running-back room.
The Salt Lake Tribune listed Preston Rex at 18 carries for 94 yards and two touchdowns, Journee Tonga at 19 for 157 and one touchdown, and DeVaughn Eka at 12 for 87 and one score. Together, that is 49 carries for 338 yards, or 6.9 yards per attempt.
Deseret News supplied the wider view: BYU’s non-Martin runners have gained 598 yards on 111 carries with 10 touchdowns. That is 5.4 yards per attempt. Martin’s own line is 344 yards and three scores on 44 carries, a 7.8-yard average.
Those numbers should prevent a panic. They should not end the analysis.
Much of the backup production came in situations that did not ask Rex, Tonga or Eka to carry an offense for four quarters. Martin took the lead workload, the defense reacted to him, and the other backs entered around a structure he helped create. A good per-carry average in that role does not automatically become the same average on third-and-2, in pass protection or on carry No. 15.
TCU gave BYU a small preview. Rex carried eight times for 21 yards. Tonga added 28 yards on seven attempts, including a 14-yard run on the decisive possession. Eka did not record a carry. BYU still closed the game with 10 consecutive runs for 72 yards, but Bear Bachmeier handled the largest share. He finished with 15 carries, 66 yards and both touchdowns.
That drive proved BYU can finish a game after Martin exits. It did not prove Bachmeier should be the weekly replacement.
The first job is to protect the quarterback’s value
Bachmeier’s legs are part of BYU’s offense. Removing them would make the replacement plan worse.
The danger is turning a useful advantage into emergency labor.
A quarterback keeper changes the math because the defense cannot treat the handoff as the only run threat. Bachmeier’s 21-yard touchdown at TCU was the winning play, and his scrambles kept the final drive alive. If BYU asks him to supply Martin’s missing carries every week, the offense spends that mathematical advantage through repeated contact.
The better target is not a fixed carry limit. It is role clarity.
Rex can handle the snaps that demand trust: early-down carries, short yardage and protection assignments. Tonga has already shown acceleration through a crease, both at TCU and in his 157-yard season total. Eka gives the room another actual running back rather than forcing every change through the quarterback. Legend Glasker can still stress an edge from his receiver role without being treated like a 225-pound feature back.
BYU does not need all three backs to split the box score evenly. It needs enough ordinary production from them that Bachmeier’s runs remain selective. If he carries 15 times because Iowa State’s front keeps handing him the right read, that can be sound football. If he carries 15 because no back earned the next call, BYU has a problem that will compound over a month.
Our earlier Martin and Isaiah Glasker depth analysis treated the backfield as a workload plan. The new timeline raises the standard. A one-game committee can survive on surprise and adrenaline. A multi-game committee needs repeatable jobs.
Martin’s missing yards are only part of the bill
Martin has averaged 7.8 yards per carry this season. More important, a defense has to account for him before the snap.
That attention helps the quarterback read, the tight end release and the receiver motion get cleaner pictures. When Martin is not in the backfield, opponents can change the price of those decisions. They can make Rex or Tonga prove the inside run before a safety joins it. They can squeeze Bachmeier’s keeper without giving the same respect to the handoff. They can pressure protection rules that are already adjusting without right tackle Andrew Gentry.
BYU’s answer has to include the passing game.
Bachmeier completed 11 of 24 passes for 62 yards at TCU. The rain was heavy and the Cougars won, but that output cannot become the template for the next month. A backfield without Martin needs efficient early-down throws because those throws stop linebackers from treating every new ball carrier as an invitation to attack downhill.
The useful plays may look boring: a quick completion behind a linebacker, a tight-end route off run action, a receiver screen that makes the edge defend width. Six yards before third down can do more for the replacement backs than another designed quarterback run.
Friday’s Iowa State watch guide explains the immediate version. The Cyclones just allowed West Virginia to rush for 291 yards, including 149 by quarterback Michael Hawkins Jr. That makes Bachmeier’s run threat tempting. BYU still has to leave Iowa State believing the back might keep the ball.
Each week asks for a different replacement
There is no single Martin-less game plan that covers this schedule.
Iowa State is the first allocation test. BYU has to find out which backs can handle normal conference-game downs without waiting for a crisis. The Cyclones’ recent run-defense line offers room to test the committee, but their offense can also force BYU out of a patient script if Aiden Flora creates another fast start.
Notre Dame changes the standard. The Irish game was already the largest home date on the schedule. The ESPN report removes the possibility of saving Martin for it. BYU will need a complete offense, not a collection of substitutions, because a defense can spend a week attacking every protection and tendency the Iowa State tape reveals.
UCF adds travel and asks whether the committee can repeat. Arizona State comes one week later. By then, the surprise is gone. Opponents will know which back receives which job unless BYU deliberately breaks its own patterns.
Utah sits near the front edge of the reported return range. That makes it the most dangerous game to discuss now. The rivalry does not speed healing, and a possible return would not guarantee a full workload. BYU should build an offense capable of going to Salt Lake City without Martin, then treat any later medical clearance as added capacity rather than rescue.
Baylor falls inside the six-week range. Kansas arrives after it. Neither date carries a promise.
Friday begins the audit
The useful Iowa State questions are narrower than “Who replaces LJ Martin?”
Who gets the first carry after Rex? Which back stays on the field on third down? Does Tonga get another chance immediately after a mistake, or does the rotation tighten? Can Eka earn a real role? How often does BYU throw on first down when the new backs are in? Does Bachmeier reach double-digit carries because the read demands it or because the handoff disappears?
Those answers will tell us more than one breakaway run.
Martin is the reigning Big 12 Offensive Player of the Year. BYU cannot recreate 1,305 rushing yards, 12 touchdowns and the attention attached to them by handing out equal slices. It can keep the offense functional by making every remaining player responsible for a specific part of the loss.
Rex, Tonga and Eka have enough production to deserve the first chance. The passing game has to prevent loaded boxes from swallowing that chance. Bachmeier has to remain the multiplier, not become the entire multiplication table.
Four to six weeks is long enough for a temporary fix to become an identity. BYU now has to choose one that can survive October and still have something left when November arrives.
Sources and further reading
- BYU Athletics: TCU final for Martin’s first-quarter exit, BYU’s 17-10 win, team rushing line, Bachmeier’s production and the closing drive.
- BYU Athletics: 2026 football schedule and official Iowa State event 24744 for the sequence of opponents, venues and stable event record.
- ESPN reporter Pete Thamel: Martin expected to miss four to six weeks for the original sourced timeline and explicit Notre Dame absence.
- KSL Sports: BYU-Iowa State availability report for Martin’s official out designation against Iowa State, his 2026 line and BYU’s listed backfield options.
- The Salt Lake Tribune: what comes next for BYU’s run game for independent confirmation of the ESPN report and the current Rex, Tonga and Eka rushing totals.
- Deseret News: Martin injury update for Martin’s career context and BYU’s non-Martin rushing totals.
