A history of how basketball crossed the border in 1996 and resulted in Mexico City’s 2021 NBA G League debut — I. When Horacio Llamas, the 6'11" teenager from Sinaloa, Mexico, migrated to Tucson, Arizona, he became the first Mexican to cross the border while dribbling a basketball. Well, maybe he wasn’t the first; but he was definitely the best. The young prospect played at Pima Community College, where he received…