Officials let down Seasiders as they play City off the park.
Despite being second best for the majority of the game, Tevez gave Roberto Mancini's men the lead after being twice in an offside porsition, when he flicked home David Silva's cross in the 67th minute.
Blackpool hit back as a superb Charlie Adam free-kick found Marlon Harewood who nodded beyond Joe Hart with 12 minutes remaining.
Just 25 seconds later defender Evatt was fouled on the edge of the area by Carlos Tevez ony for the
Argentinian to be allowed to carry on and score with a huge deflection off defender Cathcart before Silva wrapped things up.
Although City started well and Vincent Kompany had a header beaten away by Matt Gilks, Blackpool were by far the better side on the ball and could have scored themselves when DJ Campbell put a header wide of the goal.
A below par City struggled to live with Blackpool's passing game at times, but could have poached a goal just before the break had Joleon Lescott, Emmanuel Adebayor and Carlos Tevez all not failed to get a true connection with a bouncing ball in the box.
DJ Campbell then missed a golden chance when he found himself one-on-one with Hart, and Gary Taylor-Fletcher had a fine effort incorrectly ruled out for offside before Tevez took over, and he could have had a hat-trick had a late drive not crashed off the bar.
But Silva made sure of the points with a fine solo goal in the 90th minute before a well worked move gave Gary Taylor-Fletcher a consolation goal.
Pool fans are left again with the thoughts of the shocking misjustice that denied them not only a clear goal but allowed Tevez to be judged onside and seemingly foul Evatt whilst scoring a brace for the blues in a game so dominated by the men in Tangerine.