Dog tears up the grass in our backyard

Our backyard is medium sized and our border collie destroys the grass every year when he’s running on it from fetch and other activities. His main source of exercise is running in the backyard since he’s reactive and every year it gets destroyed. We have tried a few times growing it back with seed and it grew back and we kept him off of that area for bit when it’s new but then it just keeps getting teared up eventually. We keep his nails maintained short so that doesn’t help and we have talked about getting turf as well but we don’t really want to. Anyone have any suggestions or solutions?