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Ippei Mizuhara, the former translator for Los Angeles Dodgers designated hitter Shohei Ohtani, during an introductory press conference at Dodger Stadium, on Dec 14, 2023.Kirby Lee/Reuters

The former interpreter for Los Angeles Dodgers star Shohei Ohtani has agreed to plead guilty to bank and tax fraud in a sports betting case where prosecutors allege he stole US$16-million from the Japanese baseball player to pay off debts, federal prosecutors said Wednesday.

The scandal surrounding Ippei Mizuhara shocked baseball fans from the United States to Japan when the news broke in March.

Mizuhara will plead guilty to one count of bank fraud and one count of subscribing to a false tax return, the U.S. Justice Department announced. The bank-fraud charge carries a maximum of 30 years in federal prison, and the false tax-return charge carries a sentence of up to three years in federal prison.

Mizuhara will enter his guilty plea in the coming weeks and is set to be arraigned May 14, prosecutors said.

“The extent of this defendant’s deception and theft is massive,” United States Attorney Martin Estrada said in a statement. “He took advantage of his position of trust to take advantage of Mr. Ohtani and fuel a dangerous gambling habit.”

Mizuhara exploited his personal and professional relationship with Ohtani to plunder millions from the two-way player’s account for years, at times impersonating Ohtani to bankers, prosecutors said. Mizuhara’s winning bets totalled more than US$142-million, which he deposited in his own bank account and not Ohtani’s. But his losing bets were around US$183-million, a net loss of nearly US$41-million. He did not wager on baseball.

There was no evidence that Ohtani was involved in or aware of Mizuhara’s gambling, and the player is co-operating with investigators, authorities said.

The Los Angeles Times and ESPN broke the news of the prosecution in late March, prompting the Dodgers to fire the interpreter and MLB to open its own investigation.

MLB rules prohibit players and team employees from wagering on baseball, even legally. MLB also bans betting on other sports with illegal or offshore bookmakers.

Mizuhara has been free on an unsecured US$25,000 bond, colloquially known as a signature bond, meaning he did not have to put up any cash or collateral to be freed. If he violates the bond conditions – which include a requirement to undergo gambling addiction treatment – he will be on the hook for US$25,000.

Ohtani has sought to focus on the field as the case winds through the courts. Hours after his ex-interpreter first appeared in court in April, he hit his 175th home run in MLB, tying Hideki Matsui for the most by a Japan-born player, during the Dodgers’ 8-7 loss to the San Diego Padres in 11 innings.

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