Ohtani's first home run came in the fifth inning of Wednesday's game, with the Dodgers leading 5-2. Ohtani faced Cubs reliever Nate Pearson and crushed a 99.1 mph fastball to deep center. The ball struck the wall near the yellow home-run marker, creating some uncertainty about whether it had cleared the fence.

The largest contract in the history of professional sports was enough to topple Ohtani's $100 million endorsement portfolio in Sportico's list of baseball's top earners for this year.

Ohtani is the second Japanese-born player to hit a home run in an MLB game played in Japan, joining Hideki Matsui. Matsui hit a two-run home run for the New York Yankees against the Tampa Bay Devil Rays at the Tokyo Dome on March 31, 2004.