A day after setting a major-league record for triple plays, the Twins and Red Sox set one for double plays. The Red Sox hit into six double plays, while the Twins ground into four to set the major league record, as the Red Sox win again, 5 – 4. The previous mark of nine twin killings was last accomplished on April 15, 1961.

On July 18, 1990 — A day after setting a major-league record for triple plays, the Twins and Red Sox set one for double plays. The Red Sox hit into six double plays, while the Twins ground into four to set the major league record, as the Red Sox win again, 5 – 4. The previous mark of nine twin killings was last accomplished on April 15, 1961.

Source:
Baseball Reference July 18