The Russell Westbrook questions are just getting harder

Since their high-profile breakup nearly three years ago, former teammates Kevin Durant and Russell Westbrook’s postseason legacies have certainly headed in opposite directions.

While Durant and the Warriors are gunning for their third consecutive NBA title, Westbrook and the Thunder were ousted for the third straight spring in the first round with Tuesday’s thrilling 118-115 Game 5 loss to Portland. Damian Lillard put an exclamation point on a series in which he outplayed Westbrook with a 37-foot game-winner at the buzzer.

This first round belonged to the Blazers star, while Westbrook’s legacy continued to waver.

“There’s different ways, different aspects of my game has changed, the way I play, that changes,” Westbrook said before Game 5, according to ESPN.com. “But my approach to the game has never changed.”

Westbrook, 30, completed a third straight season by averaging a triple-double, including career bests of 11.1 rebounds per game and 10.7 assists per game, with the latter leading the NBA.

Despite those gaudy numbers, Westbrook shot just 42.8 percent from the field and 29 percent from 3-point range this season — his worst rates from beyond the arc since his second NBA campaign, in 2009-10.

The eight-time All-Star was no better from the floor against the Blazers, shooting under 40 percent for his third straight playoff series, while engaging in his silly “next-question” feud with the media.

In all, Oklahoma City has won just four postseason games (4-12) since Durant’s departure, even with Paul George playing at an MVP-caliber level alongside Westbrook this season.

Oklahoma City had taken 73-win Golden State to seven games in the 2016 Western Conference Finals; Durant signed with the Warriors as a free agent that summer after they’d lost to LeBron James and the Cavaliers in the championship round.

Now, Durant is still playing for another ring and is set to be the grand prize of this summer’s free-agent bonanza — possibly even signing with the Knicks. Westbrook just finished the first season of the five-year, $206.8 million extension he inked in 2018.

That loyalty made Westbrook a hero in Oklahoma City and last season convinced George to star alongside him. But there is no convenient Carmelo Anthony scapegoat this season, like there was last. Just hard questions, starting with this one: What is the ceiling of a team on which Westbrook is your best player?