Oregon Ducks had a glaring weakness get exposed in their loss against Indiana

Oregon Ducks have a glaring weakness on defense that must get addressed.

Brentley Weissman College Football Trending News Writer
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Oct 11, 2025; Eugene, Oregon, USA; Indiana Hoosiers quarterback Fernando Mendoza (15) takes a sack near offensive lineman Carter Smith (65) against Oregon Ducks linebacker Matayo Uiagalelei (10) and linebacker Bryce Boettcher (28) during the first quarter at Autzen Stadium. Mandatory Credit: Troy Wayrynen-Imagn Images

A troubling development emerged from Oregon’s disappointing loss to Indiana on Saturday – the Ducks’ linebacker unit, which had shown steady improvement through the first five games, was completely exposed. What had quietly been a position of concern heading into the season became a glaring weakness against one of the nation’s most balanced offenses.

From the opening drive, Oregon’s linebackers struggled to keep pace. Missed tackles, blown assignments, and confusion in coverage were recurring themes throughout the afternoon. Bryce Boettcher, Devon Jackson, and Jerry Mixon – all of whom have flashed at times this year – had rough outings in space and pursuit. Too often, they failed to wrap up, allowing Indiana’s quick-twitch skill players to turn routine checkdowns and short passes into explosive gains.

The issues went beyond poor tackling. Indiana’s quarterback Fernando Mendoza repeatedly took advantage of Oregon’s linebackers in coverage, finding running backs and tight ends on mismatches and exploiting soft zones in the middle of the field. It was a masterclass in identifying and attacking Oregon’s weakest link.

This performance stings even more given the context. Oregon entered the season knowing linebacker depth and experience would be a question mark after Jeffrey Bassa left for the NFL. The unit held up surprisingly well through the first five games — playing disciplined football and contributing to a top-15 national defense. But against Indiana, the flaws that many feared might surface finally did.

The Ducks now face a critical juncture in their season. Defensive coordinator Tosh Lupoi and head coach Dan Lanning must find solutions quickly. Whether it’s simplifying coverage responsibilities, rotating in different personnel, or scheming to provide more help in space, Oregon can’t afford another breakdown like the one that doomed them on Saturday.

With conference play heating up and explosive offenses still ahead on the schedule, Oregon’s hopes of staying in the playoff hunt will depend heavily on whether this linebacker unit can regroup – and prove that the Indiana game was the exception, not the beginning of a trend.