Prieto violated rules against the use of electronic communications devices when he wore the Apple Watch during the game. Major League Baseball investigated and said there was no sign the watch was used for anything suspicious.
"M.L.B. found no evidence that Mr. Prieto used the Apple Watch or cellphone for any purpose in the dugout, nor any baseball-related communication on either device during Wednesday's game," the statement on Friday said.Though the watch was not misused, Prieto and the Diamondbacks received a fine in an "undisclosed amount" just for having the watch in the dugout. The money will be donated to hurricane relief efforts in Puerto Rico.
The Boston Red Sox were also fined last month for using electronic communications devices in the dugout to more quickly relay the opposing team's signs to players on the field. The device in that event was originally said to be an Apple Watch, but later reports suggested it was instead a Fitbit.