Shohei Ohtani is the most accomplished baseball player of his generation. He is a two-time Most Valuable Player, a World Series champion with the Los Angeles Dodgers, and the only player in modern Major League Baseball history to compete at an elite level as both a hitter and a pitcher. In December 2023 he signed a ten-year, seven hundred million dollar contract with the Dodgers, the largest contract in North American sports history.
Throughout his entire MLB career through early 2024, Ohtani communicated with American media, teammates, and business partners through one man: Ippei Mizuhara, his Japanese-language interpreter. Mizuhara had been with him since his 2018 arrival from Japan. The two were inseparable on game days. Mizuhara was at every press conference, every clubhouse interview, every business meeting. He was Ohtani's most trusted English voice for six years.
On March 20, 2024, ESPN published an investigative report stating that Mizuhara had transferred at least four and a half million dollars from Ohtani's personal bank account to pay an illegal sports bookmaker in Orange County, California. The story broke during the Dodgers' season-opening series against the San Diego Padres in Seoul, South Korea. Ohtani was on the field when the news landed. Mizuhara was fired the same day.
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The bookmaker was Mathew Bowyer, a fifty-something operator in Newport Beach who ran a substantial illegal sports betting operation throughout Southern California. Bowyer had been under federal investigation since 2022 as part of a broader probe into illegal gaming in the Los Angeles area. The probe found that Mizuhara had been one of Bowyer's largest individual bettors over a four-year period from 2021 through early 2024.
The mechanics of the theft were straightforward. Mizuhara had been given access to Ohtani's primary bank account in 2018 to manage daily expenses, pay utility bills on the player's behalf, and handle small business matters. He used that access to make wire transfers totaling almost seventeen million dollars to accounts controlled by the bookmaker over approximately three years. Each transfer was disguised in account records as a routine business payment.
The federal investigation eventually documented the full total at sixteen million nine hundred and seventy-five thousand dollars. The vast majority of the stolen money was used to pay gambling losses on professional sports betting through Bowyer's operation. The bets were not on baseball. They were primarily on football, basketball, and college sports, placed throughout the 2021 to 2024 period at stakes that escalated as the losses accumulated.
The FBI cleared Ohtani of any involvement within several weeks of the initial reporting. Investigators concluded that the player had been unaware of the transfers, had not authorized them, and had no knowledge of the bookmaker or the betting activity. The clearance was confirmed publicly in early April 2024. Ohtani gave a single press conference on March 25 in which he said, through a new interpreter, that he had been completely deceived by a man he had trusted as a close friend.
Mizuhara pleaded guilty to bank and tax fraud on June 4, 2024 in federal court in Los Angeles. He admitted to all charges, expressed remorse for the betrayal of Ohtani's trust, and agreed to pay restitution. The plea agreement noted that he had developed a severe gambling addiction over the four-year period and that he had been losing the bets faster than he could pay them, which led to the escalating theft pattern.
The sentencing took place on February 6, 2025. Mizuhara received fifty-seven months in federal prison, three years of supervised release after his sentence, and a restitution order of approximately eighteen million dollars to Ohtani and the Internal Revenue Service. He surrendered to federal custody in Los Angeles in March 2025 and is currently serving his sentence at a federal correctional facility.
The cultural resonance of the case reached well beyond baseball. Ohtani was at the time the most globally recognizable Asian athlete in American sports history. The betrayal of his trust by his closest American confidant during his rise to MLB stardom became a parable about celebrity, gambling addiction, and the structural risks of total dependence on a single interpreter for cross-cultural communication. The Dodgers and MLB tightened protocols on player financial access in the months following the case.