Doherty facing six-week lay-off

Manager Peter Taylor told the club website: "Tommy turned his ankle over at the training ground because of the hard conditions. It wasn't from a tackle, but he's hurt it again."

"He's going to be out for up to six weeks unfortunately, which is another blow for us."

The former Bristol City, Queens Park Rangers and Wycombe player signed a two year contract at Valley Parade last May.

Source: BBC Sport