Grimsby Town ensured Forest Green Rovers suffered their first defeat of the season with a 1-0 win at Blundell Park.
Nathan Pond scored the only goal of the game to give the Mariners a third win in four games.
Town lost Andy Cook and Bradley Wood to injury in a quiet first half of very few chances.
But it was the home side who secured the points, scoring the only goal of the game in the 63rd minute.
Frankie Artus' free-kick delivery was headed home by Fleetwood loanee striker Pond.
Rovers pressed for an equaliser and Matty Taylor's 85th-minute effort flew just wide of the post.
James Norwood came closest to preserving their unbeaten record but his stoppage-time shot was well held by James McKeown in the Mariners goal.