FILE - In this Dec. 17, 2016, file photo, referee Jacyn Goble signals during the first half of an NBA basketball game between the Detroit Pistons and the Indiana Pacers in Auburn Hills, Mich. John and Jacyn Goble are the first siblings to be on the NBA's officiating staff at the same time. John is in his 10th season in the league. He encouraged Jacyn to get back into officiating while he worked with the Miami-Dade Police Department, and this season his younger brother was promoted to the NBA's 64-member staff. (AP Photo/Carlos Osorio, File)
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