This year’s wave of MLB gambling scandal has reached the umpire ranks. MLB umpire Pat Hoberg has been disciplined for a violation of the league’s gambling rules, according to The Athletic. Hoberg is reportedly appealing the decision.

The exact nature of Hoberg’s violation was unexplained, but MLB said in a statement that it found no evidence that he manipulated games he was working. MLB reportedly began investigating the 37-year-old during spring training this year and removed him from the field during the investigation.

Per ESPN’s Jeff Passan, Hoberg has denied betting on baseball.

MLB’s statement, via The Athletic: “During this year’s Spring Training, Major League Baseball commenced an investigation regarding a potential violation of MLB’s sports betting policies by Umpire Pat Hoberg. Mr. Hoberg was removed from the field during the pendency of that investigation. While MLB’s investigation did not find any evidence that games worked by Mr. Hoberg were compromised or manipulated in any way, MLB determined that discipline was warranted. Mr. Hoberg has chosen to appeal that determination. Therefore, we cannot comment further until the appeal process is concluded.”