NACOGDOCHES, Texas (AP) — Cameron Kelley's 81-yard catch-and-run TD followed a minute later by A'Amear Walton's 20-yard pick-6 were part of a 21-point third quarter that helped undefeated Stephen F. Austin pull away for a 45-24 victory over Southeastern Louisiana on Saturday night in a matchup of top 25 Championship Subdivision teams.