Michael Harmon Jr. and Brooklyn Buchanan maintained their leads after Thursday’s third round of the 2021 Teen Masters at Thunderbowl Lanes in the Detroit suburb of Allen Park, Michigan. Harmon totaled 1,304 in the third round to total 4,094 to lead the 155 boys, while Buchanan totaled 1,191 for 3,977 to leads the 68 girls. For the boys, Kyle Pranger stayed second at 1,244-3,904, and John Nunn moved into third with 1,305-3,893. Defending champion Bryce Oliver advanced in 14th...