As the post-spring transfer portal deadline approached Sunday, a 10th Auburn player opted to depart the program.

Colby Smith, a reserve offensive lineman who signed with Auburn’s 2021 class, entered the transfer portal on Sunday, according to multiple reports. He was one of two Tigers to hit the portal on the final day of the transfer window, joining tight end-turned-wide receiver Landen King.

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A 6-foot-8, 340-pounder out of Reidsville, N.C., Smith was a three-star offensive tackle prospect who signed with Auburn two years ago. He redshirted during his first season on the Plains while not seeing the field in any of the Tigers’ games, and he made his first career appearance during the team’s penultimate game last fall, making his debut in Auburn’s win against Western Kentucky.

Smith spent his first two seasons with Auburn working at offensive tackle but shifted inside to guard this spring. He was working as the third-team left guard during the final week of spring and found himself down the depth chart of Auburn’s retooled offensive line.

Smith is the 15th member of Auburn’s 18-deep 2021 signing class to leave the program in the last two years. Each of Auburn’s top-10 signees from that class are now gone: edge rusher Dylan Brooks (who hit the portal Saturday), defensive tackle Lee Hunter (UCF), safety Ahmari Harvey (Georgia Tech), quarterback Dematrius Davis (Alabama State), wide receiver Tar’Varish Dawson Jr. (Cincinnati), defensive lineman Marquis Robinson, wide receiver Hal Presley (Baylor), defensive end Tobechi Okoli, King and Smith.

The other Auburn players to enter the portal since the start of spring practice are linebackers Kameron Brown, Desmond Tisdol and Powell Gordon, defensive ends Jeffrey M’ba and Okoli, wide receivers Dawson and King, edge rusher Brooks and safety Craig McDonald.

Tom Green is an Auburn beat reporter for Alabama Media Group. Follow him on Twitter @Tomas_Verde.