Career background
Nishikawa came through Ryukoku University Heian High School and Aoyama Gakuin University before Lotte selected him in the first round in 2024. His first top-level professional season in 2025 included 108 games and 444 plate appearances. He hit .281 with 117 hits, including 27 doubles, establishing value beyond home-run totals.
Beyond his three rookie-year homers, doubles and triples provided extra-base value. Moving from Aoyama Gakuin University to Lotte, he quickly received more than four hundred plate appearances and became involved in regular outfield and lineup work, rather than waiting for isolated pinch-hitting opportunities.