PLANTATION, Fla. — Francis Tiafoe became the youngest boys’ singles champion in the history of the Orange Bowl International, winning Sunday at 15. Tiafoe, from College Park, Md., beat Stefan Kozlov of Pembroke Pines, Fla., 7-6 (3), 0-6, 6-3 in the first all-America Orange Bowl boys’ final since 2004. Read More…