The Colorado Buffaloes have spent the last two offseasons rebuilding their offensive line through the transfer portal, but as the 2026 season approaches, a new sense of continuity is taking shape in Boulder. With three returning starters and two key transfers joining the fold, the unit is poised to protect star quarterback Julian Lewis and anchor the offense. Here's our projected Week 1 offensive line depth chart for the Buffaloes.
Left Tackle: Jordan Seaton – After starting all 12 games as a true freshman in 2025, Seaton has already proven he can handle the rigors of Power Four football. His blend of athleticism and raw power makes him the clear choice to protect Lewis's blind side. Look for him to take a major leap in his second year under coach Bill O'Brien's system.
Left Guard: Kareem Harden – A veteran presence who started 10 games at left guard in 2025, Harden brings stability and a nasty streak to the interior. His chemistry with Seaton on the left side is a major plus, and he's shown he can hold his own against Big 12 defensive tackles. Expect him to be a steadying force.
Center: Hank Zilinskas – After splitting time at center in 2025, Zilinskas is poised to take full control of the position in 2026. He's a smart, technically sound blocker who excels at making line calls and identifying blitzes. His experience in the offense will be invaluable for Lewis, especially on the road.
Right Guard: Justin Mayers – A transfer from Jackson State, Mayers brings a wealth of experience and a physical edge to the right side. He started 11 games at guard in 2025 and has the quickness to pull and get to the second level. His addition gives Colorado a powerful interior duo alongside Harden.
Right Tackle: Phillip Houston – A transfer from Northern Colorado, Houston is a massive, long-armed tackle who started 10 games at right tackle in 2025. He's still raw, but his upside is immense. With a full offseason in the program, he has the tools to become a reliable pass protector and a mauler in the run game.
This group may not have the star power of some past units, but it has the ingredients for success: experience, continuity, and a clear identity. If these five can gel early, Colorado's offense could be one of the most formidable in the Big 12 in 2026.