Coyle scored for Gillingham after coming off the bench to replace John Akinde in the 60th minute against Swindon.
Meanwhile, John-Jules got his first start for Doncaster after his recent injury absence, and netted his second goal in consecutive games against Northampton Town.
He also scored in midweek after coming off the bench against Hull City.
Both players will be hoping to continue getting regular game time as the season progresses.
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