On July 4,1961 At Metropolitan Stadium, the Twins sweep a pair from the White Sox, winning the opener, 6 – 4, when Julio Becquer hits a 9th-inning grand slam as a pinch hitter. Cal McLish shuts out the Twins in the second game until the 8th inning when the Twins score four runs, two on Harmon Killebrew’s only career inside-the-park homer, off McLish. It is the Twins’ first inside-the-park home run. They win, 4 – 2, behind Jack Kralick.

Source

Baseball Reference July 4