Papiss Cisse returned from injury in the nick of time to hand Alan Pardew a lifeline with a double which denied Hull victory
Stoke goalscorer Peter Crouch's frustration was evident after his side twice lost the lead to draw 2-2 with QPR.
"It's a huge disappointment," Crouch told BT Sport.
"I think we should have been leading at half-time and to not win the game... I think we were the better team and derserved to win."
Kranjcar's goal came after Steve Sidwell's needless foul and Crouch was not surprised to see his former Portsmouth team-mate exact full revenge.
"I knew he was a threat and then he goes and does that," he said.
"It was a great free-kick but if you don't go and get the three or four goals, you're always susceptible to that.
"It was a bit of a sucker blow, it's hard to take but if you don't punish teams you're always susceptible to drawing a game."
Alan Pardew was greeted by sporadic boos as Newcastle fans found themselves torn between supporting their team against Hull and protesting against the manager.
The 53-year-old's presence in his technical area, as Saturday afternoon's Barclays Premier League clash began, drew some early derision from a section of the home support, but the bulk of the Toon Army concentrated on trying to roar on their team.
Indeed, the first chant of "You're getting sacked down in the morning" came from mischievous Hull fans on an afternoon when many of their opposite numbers targeted Newcastle owner Mike Ashley instead.
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