Daniel Grein is an offensive lineman for the Arkansas Razorbacks standing 6'5" and weighing 324 pounds. The redshirt freshman from Munster, Indiana, attended IC Catholic Prep High School, where he played both offensive and defensive line and helped the Knights to a 9-3 record in 2023. He also competed in the Blue-Grey All-American Bowl and spent time at Milford Academy in 2024. During the 2025 season, Grein appeared in two games as a reserve.