Minnesota United coach Adrian Heath took Saturday's 3-2 loss at the Colorado Rapids a little bit harder than usual.

Part of that came from the shock of setting the team up well through solid training sessions, only to see the players deviate from the game plan throughout the game. And possibly a larger part came from something the coach had no control over: the refereeing.

Heath lamented several calls that cost United a much-needed victory over the bottom-dwelling Rapids. One was winger Miguel Ibarra's red card, which the player himself protested on Twitter. Another was the extra minute of stoppage time when the referee allowed a final corner kick despite the announced six minutes having already elapsed. Colorado then scored the winner.

The officiating also frustrated the coach in May during a 3-1 loss to the San Jose Earthquakes, another team languishing at the bottom of the standings.