Substitute Emile Sinclair spared Crawley's blushes as he stuck late on to earn a 2-1 win against Conference North table-toppers Hednesford
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Metropolitan Police face Crawley Town in the First Round of the FA Cup.
Crawley drew 2-2 with Brighton as Hope Akpan and Billy Clarke got the Richie Barker era at Crawley off to a solid start with two strikes in the opening 22 minutes, but a Mat Sadler own goal and Charlie Oatway ensured parity at full-time.
Charlton Athletic beat League One new boys Crawley thanks to a single Danny Green goal.