The AFL comeback of Richmond midfielder Mark Coughlan is on hold again because of hamstring soreness.

Coughlan was due to resume for the Tigers' VFL affiliate Coburg this weekend, but he pulled up sore at training.

Coughlan managed one pre-season game, but hasn't played since because of his hamstring troubles.

The Tigers are not putting a timeframe on his return.

The midfielder has endured terrible luck with injury, needing a second knee reconstruction that ruled him out for all of last season.

Coughlan, who turns 26 on Sunday, has played 83 senior games for Richmond since 2001 and won their 2003 best and fairest award.

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