The O's are currently top of League One: Simon O'Connor
Leyton Orient's trip to Shrewsbury Town has been rescheduled for Tuesday, January 7.
The O's were due to face them the previous Saturday but that date is busy because Orient are away to Yeovil Town in the third round of the FA Cup.
Russell Slade's side are currently top of League One and know a victory against Crawley this weekend will keep them at the summit over Christmas.
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