Simplify the following text for a Grade 14 native English-speaking person.
Original: Neyland remains the all-time winningest coach in Tennessee Volunteers history with 173 wins in 216 games , six undefeated seasons , nine undefeated regular seasons , seven conference championships , and four national championships .
Simplified: Neyland holds the record for most wins in University of Tennessee history with 173 wins in 216 games , six seasons without losing a game , nine regular seasons without losing a game , seven conference championships , and four national championships .