On August 6, 1667, Johann I Bernoulli was born in Basel. He was a prominent Swiss mathematician who made significant contributions to infinitesimal calculus and mentored Leonhard Euler. He studied medicine at the University of Basel before becoming a professor of mathematics there, succeeding his brother Jacob. His connection to Basel was further solidified through his marriage to Dorothea Falkner, the daughter of a Basel alderman. See wikipedia for more information.

Also on August 6, but in 1999, Rebeka Masarova was born in Basel. She is a Swiss professional tennis player who achieved career-high WTA rankings of No. 62 in singles and No. 125 in doubles. Inspired by watching Roger Federer, she began playing tennis in her hometown and, after a period representing Spain, returned to represent Switzerland in 2024. See wikipedia for more information.