The Pirates traded Williams to the Athletics on Saturday in exchange for Kyle Robinson.
The 27-year-old infielder will join the Athletics' active roster immediately upon coming over from Pittsburgh, replacing Michael Stefanic. Williams hasn't appeared in an MLB game since 2024, but he's earned an opportunity by slashing .317/.385/.467 with two homers, 18 RBI and 19 runs scored through 135 plate appearances at Triple-A Indianapolis. He'll provide an extra option on the left side of the infield while the A's deal with injuries to Jacob Wilson (shoulder) and Max Muncy (hand).