Complex sentence: Prior to his junior season, Flowers attended Thomas Stone High.He almost single handedly beat dematha As a junior at St. Mary Ryken High in Leonardtown, Flowers averaged 17.5 points, 12 rebounds and 4 blocks per game.
Split into simpler sentences: Prior to his junior season, Flowers attended Thomas Stone High. That season Flowers averaged 17.5 points, 12 rebounds and 4 blocks per game.