Graham Salisbury has been appointed as the referee for Leyton Orient's play-off semi-final first leg at Peterborough United on Saturday.
Salisbury's only previous Orient game this season came in the 0-0 draw at Notts County in March. The referee took charge of Peterborough's 2-0 home win over Exeter in the FA Cup in November.
Adam Crysell and Lee Swabey will be the linesmen this weekend while Andrew Madley is the fourth official.
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