(Official matches) can be undefeated.Logical formLearned from2 sentences. A championship can be undefeated.Logical formLearned from2 sentences. A football may go undefeated.Logical formLearned from2 sentences. A champion may go undefeated.Logical formLearned from2 sentences. Some champion may go undefeated.Logical formLearned from2 sentences. A (football team) may have some undefeated seasons.Logical formLearned from2 sentences. A (rugby team) can be undefeated.Logical formLearned from2 sentences. A national team may go undefeated.Logical formLearned from2 sentences. A (soccer program) may go undefeated.Logical formLearned from2 sentences. A (soccer team) may finish undefeated.Logical formLearned from2 sentences. A (conference title) can be undefeated.Logical formLearned from2 sentences. A wing can be undefeated.Logical formLearned from2 sentences. Titans may go undefeated.Logical formLearned from2 sentences. Armies can be undefeated.Logical formLearned from2 sentences. An undertaker can be undefeated.Logical formLearned from2 sentences.