Complex sentence: Originally, the Golden Glove could only be won outright by a single player; should there have been a tie in the number of clean sheets, the goalkeeper with the superior clean sheets-to-games ratio received the award.
Split into simpler sentences: Originally, the Golden Glove could only be won outright by a single player. Should there have been a tie in the number of clean sheets, the goalkeeper with the superior clean sheets-to-games ratio received the award.