“The linesman’s got involved in few decisions and he’s called them correctly, but when he needed to get involved with a clear hand ball and Chung Yong-Lee fouled right on the edge of the area which should have been a free kick, and possibly a penalty, he didn’t,” Coyle said.
“They’ve swept up the park and Zenden’s done a good finish, but the bottom line is clear infringement in a dangerous position for ourselves and all of a sudden you find yourselves one nil down.”
Coyle’s side went into the dressing room behind despite producing the better chances, after Sunderland scored an opener in first-half injury-time.
“I thought we started the game slowly but we had plenty of chances prior to half-time to get in front, not half-cut chances but clear-cut ones,” the Trotters' manager added.
“We never took them and we felt aggrieved to come in at half time 1-0 down.”
The Scotsman praised the Black Cats’ defensive display but could not hide his disappointment over the result, adding: “We’ve come out second half and had some real gilt edged chances to get the equaliser, which we eventually did late on, and then had a great chance to win it.
“Fair to them they’ve defended with their lives and worked their socks off, but on another day we could have two or three matches with the chances we had.”
Speaking about Sunderland’s 92nd minute winning goal Coyle said: “We were caught with sucker punch, we were well placed to defend it, whether we switched off, anyway we’ve been punished for it.
“To have no points from that game is disappointing and hugely frustrating.”
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