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The striker also becomes the sixth player to make the 100 mark in the club's history.
Allison scored Workington's second goal over the weekend in the BetVictor N/West Division as the Reds claimed a 5-1 victory over Ramsbottom United.
His 100 goals have been scored against 50 different club, and has included five hat-tricks.
Workington AFC lead the way in the N/West table, with seven wins and two draws so far this season.
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