Title-chasers Partick Thistle and Dundee lost ground in the Championship race as they cancelled each other out in a goalless draw at Firhill.
Dundee got off the brightest start but could not make early possession count and Luke Hannant had an effort saved by Thistle goalkeeper David Mitchell.
The hosts worked their way into the game and Scott Tiffoney managed to get clear of the Dundee defence but goalkeeper Adam Legzdins was equal to his effort.
Legzdins was called into action early in the second half, this time denying Steven Lawless before Hannant tried his luck at the other end.
Luke McCowan threatened on a couple of occasions for Dundee and Thistle’s Anton Dowds had a late chance but he could not get the shot away as it finished all square.