The sophomore receiver also missed two games this season with sore hamstrings. Duarte is the Bruins' second-leading receiver on the season, having caught 23 receptions for 458 yards and three touchdowns. His 19.9 yards per catch rank 10th in the nation.
As a team, UCLA has the nation's 27th-ranked passing offense, averaging 278.2 yards per game.
The Bruins received additional good injury news on Wednesday, as defensive backs Ishmael Adams (ankle) and Priest Willis (head trauma) and wide receiver Devin Fuller (leg) all practiced and are expected to play.
Saturday's game will have significant Pac-12 implications. A UCLA win would clinch the South Division title and grant the Bruins a berth in the Pac-12 championship game. A Stanford win would mean the winner of Friday's Arizona-Arizona State game would win the division. Oregon will represent the North Division in the conference championship game.
- Mike Fiammetta