Advocate staff photo by BILL FEIG -- LSU cornerback Rashard Robinson (21) is not expected to play against Alabama.

LSU starting cornerback Rashard Robinson is expected to miss the Tigers’ game against No. 4 Alabama on Saturday while serving a suspension, multiple sources told The Advocate on Saturday afternoon.

Robinson, a sophomore and preseason All-SEC third team member, has started the last six games for No. 14 LSU (7-2, 3-2 Southeastern), which hosts the Crimson Tide (7-1, 4-1) at 7 p.m. Saturday.

Details of the suspension were not known. Robinson has missed all or most of this past week’s practice, one source said.

A former four-star prospect out of Florida, Robinson is viewed as the Tigers’ most talented cornerback and was expected to help cover Alabama receiver Amari Cooper, the SEC’s leading wideout.

His absence likely means a bigger role for junior cornerback Jalen Collins. Collins, Robinson and Tre’Davious White rotate at the two cornerback positions. Robinson and White play the majority of the snaps and often start. Ed Paris, a freshman from Texas, is the fourth cornerback, according to LSU’s depth chart.

Robinson missed LSU’s 28-24 season-opening win over Wisconsin while also serving a one-game suspension. Details on that suspension were not released.

Robinson has 17 tackles and one for loss this season. He started two of the last three games last year as a true freshman as Jalen Mills shifted from cornerback to safety.

Mills could play some corner if needed. He’s the Tigers nickelback and starts at safety in base defense.

LSU’s secondary entered the season expected to be the team’s strength, and the unit has lived up to the billing. The Tigers surrender the fourth-fewest passing yards (158) in the nation, and LSU’s last three opponents have completed 49 percent of their passes.

They’ve done it over the last month without Dwayne Thomas, who started the season as LSU’s nickelback. Thomas tore his anterior cruciate ligament in a Game 5 win over New Mexico State. He’s expected to miss the rest of the regular season.

Mills replaced Thomas in the nickelback role, and true freshman Jamal Adams has emerged as the dimeback. He also rotates at safety with Mills, Rickey Jefferson and starter Ronald Martin.

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