Paul Hartley has said that Dundee must be more clinical, following their 2-1 loss to league leaders Hearts.

Dundee went into half time with a 1-0 lead, but two goals in the second half from Hearts striker Juanma consigned the Dark Blues to defeat.

"I thought we were terrific in the first 45 minutes," Hartley told reporters. "But we've got to finish our chances and be more ruthless in front of goal.

"We told them at half time that Hearts would come at them in the second half. We didn't start the second half well. I'm disappointed for the players because the first half was great and I was really enjoying it."

Dundee continue their Scottish Premiership campaign against arch-rivals Dundee United on Tuesday.