Roberto Di Matteo was left to bemoan a "clear penalty" that was not given as West Brom dropped to third in the Championship after an uninspiring goalless draw at Coventry.
There was very little to entice a crowd of 20,871 inside the Ricoh Arena to raise themselves from their seats with a distinct lack of quality throughout the encounter.
Albion should have been handed a chance to break the deadlock from the spot in first-half injury time when Jerome Thomas appeared to be tripped by Martin Cranie.
But instead of pointing to the spot referee Keith Stroud reached for his yellow card and booked the Albion winger for diving.
Di Matteo said: "It was a clear penalty.
"I've seen a replay and he touched Thomas. He just went down a bit late as he tried to stay on his feet. But there was a touch."