On May 13, 2000 — Arizona Diamondbacks pitcher Todd Stottlemyre earns his seventh victory of the season as the Diamondbacks beat the San Diego Padres, 6 – 2. It is also Stottlemyre’s 136th career win. He and father Mel Stottlemyre become the first father-son combination to record 300 wins.

Source:
Baseball Reference May 13