The 1948 SMU Mustangs football team represented the SMU Mustangs of Southern Methodist University during the 1948 college football season. Doak Walker was a junior when he won the Heisman Trophy. Doak established several other Southwest Conference records that still stand. Using only the above description and what you know about the world, "Being a junior, Doak won the Heisman trophy gleefully." is definitely correct, incorrect, or inconclusive? 