Complex sentence: In the 1972 Game in Atlanta, he hit a pinch-hit, two-run homer in the eighth inning, which was the first time that a non-American-born player ever homered for the American League in the mid-summer classic.
Split into simpler sentences: In the 1972 Game in Atlanta, he hit a pinch-hit, two-run homer in the eighth inning. This was the first time that a non-American born player ever homered for the American League in the mid-summer classic.