In the most pressure-packed game of the season, the most unpredictable player in this Thunder-Grizzlies series proved to be the steadiest of them all.

Gone was the grumpy attitude, the volatile displays of emotions and the unbridled temper.

Russell Westbrook replaced those erratic traits with rock solid composure, showing the world in the Thunder’s 104-84 thumping of Memphis in Game 6 on Thursday night he can be every bit as special even when he simply settles down.

“I thought we did a great job of just being calm, a great job of just coming in and being cool, calm and collected as a unit.” Westbrook said. “And it showed for 48 minutes. We never took a long dip.”

After countless twists and turns, this crazy best-of-7 series now shifts back to Oklahoma City for a winner-take-all Game 7. The Thunder won its only other Game 7, taking a 15-point home win over these same Grizzlies in the 2011 semifinals.

Judging by OKC’s brief playoff history, the Thunder was fortunate this time to live to fight another day.

Thursday was the fifth time the Thunder faced an elimination game and just the second time when trailing the series, 3-2. The other occasion came in the Thunder’s playoff debut against the Lakers in 2010. OKC lost that series in six and walked into FedExForum just 1-4 all-time when facing elimination before Thursday’s season-saving victory.

“Hats off to Oklahoma City,” said Memphis coach Dave Joerger. “They played with a lot of force. They played with a lot of desperation. They played with a lot of urgency. The tone was set in the first six to eight minutes of the game. They came strong. They really set the tone for the game early as far as their mentality of how they were going to play.”

Kevin Durant boiled it down to playing hard and moving the ball.

Sounds overly simplistic, but struggling to sufficiently and consistently bring those two basic elements was among the biggest reasons the Thunder was on the brink of getting bounced unexpectedly early.

By competing with a sense of urgency and a sound strategy to simply no longer settle for long-range shots, the Thunder managed to assemble what was by far its best showing since Game 1.

Westbrook was the driving force.

Two days earlier, Westbrook posted a monster 30-point, 10-rebound, 13-assist triple-double in Game 5. But that performance was widely described as one of the worst, great games in recent postseason memory. He took 31 field goal attempts, played sketchy defense, struggled to take care of the ball and hoisted questionable shots.