The Athletics defeat the Giants, 11 – 9, in a game in which San Francisco OF Barry Bonds sets an all-time major league record by receiving his 294th intentional walk. Henry Aaron held the previous mark. It is possible someone such as Babe Ruth drew more intentional walks in the years before the statistic was tracked.

On July 15, 1999 The Athletics defeat the Giants, 11 – 9, in a game in which San Francisco OF Barry Bonds sets an all-time major league record by receiving his 294th intentional walk. Henry Aaron held the previous mark. It is possible someone such as Babe Ruth drew more intentional walks in the years before the statistic was tracked.

Source
Baseball Reference July 15