Swansea boss Garry Monk felt a lack of concentration hurt his side in the 2-2 draw against Newcastle.
The Swans twice took the lead at the Liberty Stadium on Saturday but Papiss Cisse equalised on both occasions to cancel out Wilfried Bony and Wayne Routledge goals.
"It's two points dropped and the goals we conceded were poor,'' Monk told a news conference. "There was a lack of concentration and it's cost us dearly.
"We knew Newcastle would be fighting and they showed that in their performance. We were dominant but we conceded a poor goal before half-time and we spoke about starting the second half very well.
"We did that but possession came for us too easily and that was our downfall for the second goal because they countered and scored.''
Monk had made a strong prematch appeal for referees to provide greater protection for his players.
The Swansea boss feels fouls against his side have gone largely unpunished this season but he later expressed his unhappiness with Lee Mason's performance.
"I think my point was made blatantly clear once again,'' Monk said. "I can't say any more than I've already said and yet it seems to have gone unheard.
"They had 13 or 14 fouls before anything even happened and [Fabricio] Coloccini was in the back of Bony all the time before he was booked.''