A first day can be undefeated.Logical formLearned from2 sentences. A (power puncher) can be undefeated.Logical formLearned from2 sentences. Scores can be undefeated.Logical formLearned from2 sentences. Some (group leaders) may advance undefeated.Logical formLearned from2 sentences. A perfect season can be undefeated.Logical formLearned from2 sentences. A win may set an (open era record) by remaining undefeated.Logical formLearned from2 sentences. A contestant may retire undefeated.Logical formLearned from2 sentences. A champion may retire undefeated.Logical formLearned from2 sentences. Dolphins may go undefeated.Logical formLearned from2 sentences. Some undefeated seasons can be without a tie.Logical formLearned from2 sentences. A thoroughbred can be undefeated.Logical formLearned from2 sentences. A goal of an undefeated season can be unrealistic.Logical formLearned from2 sentences. A force can be undefeated.Logical formLearned from2 sentences. A fall can be undefeated.Logical formLearned from2 sentences. An undefeated season can be in a decade.Logical formLearned from2 sentences.