There was a controversial moment in the final minute of game one between the Golden State Warriors and Oklahoma City Thunder as Russell Westbrook appeared to travel with just under 20 seconds still to play.
Under intense pressure from Klay Thompson, Westbrook crossed half court and picked up his dribble before dragging his pivot foot, much to the frustration of Warriors head coach Steve Kerr, who was in pole position to see the play unfold.
However, match official Monty McCutchen awarded the point guard a timeout. After the stoppage, he was immediately fouled and sunk one of two free throws to take the Thunder's lead up to four and make it a two possession game.
Golden State was unable to recover and surrendered the opening encounter on their home court 108-102 to go behind in a series for the first time in the 2015-16 playoffs.
After the game, Kerr was keen not to dwell on the past and insisted that wrong calls were just something you have to deal with at times.
In his post-game press conference, the Coach of the Year said: "I thought he walked, but it wasn't called, so that's the way it goes."
The NBA's senior vice president of replay and referee operations has since said that a travelling violation should have been called on the play, and it is yet another examples of officials missing a big incident that had huge ramifications on the outcome of a game.
Joe Borgia said: "The officials, no one could get in a good position to see him drag that pivot foot. It's an unfortunate miss, but [with] so much going on in the play, the speed of it, and officiating is about getting angles and sometimes you just can't get them, and they did not get a great angle on that play."
The opening game of any series is important, but it is not the deciding factor - just ask the Toronto Raptors.
Many people expected the Warriors to protect their homecourt, so seeing the Thunder take a surprise victory adds an interesting dimension to the Western Conference Finals.
The defending champions are likely to come out all guns blazing in game two having thrown away a 13 point lead at half time through a number of rushed shots and needless turnovers. Curry was the major culprit as he gave up possession seven times throughout the night.
Golden State has a history of returning from adversity, having been down 2-1 to the Cleveland Cavaliers before going on to lift the Larry O'Brien Trophy in 2015.
The test now is for the Dubs to show their true championship quality and adapt to a franchise who have their eyes set on ending their long wait for a ring.