What happened: Kazuma Okamoto hit his 23rd home run of the 2026 season, setting the MLB record for most home runs by a Japanese-born rookie. He passes Shohei Ohtani, who hit 22 in 2018, a mark Okamoto had tied earlier this month before pulling ahead outright.

Why it matters: The record caps a rookie season already drawing Ohtani comparisons. Munetaka Murakami sits third on the same list with 20 home runs in 2026, the first time multiple Japanese-born rookies have threatened the mark in the same year.

What to watch: Okamoto continues padding the new mark as the season moves toward the trade deadline stretch.