The Trail Blazers huddled in a timeout with just more than 17 seconds left against Oklahoma City, and the overwhelming sentiment was simple: relax.
The Thunder had trimmed Portland's lead to 110-109, but the Blazers refused to get rattled and came away with a 114-109 victory Thursday night.
"Even though it got scary there at the end, we were still able to calm ourselves down and get the win," said Damian Lillard, who finished with 33 points.
Russell Westbrook scored 45 on 12-of-36 shooting for the Thunder, who had their four-game winning streak snapped. Oklahoma City newcomer Taj Gibson added 15 points, including a high-arching buzzer-beater from 61 feet away to put the Thunder up 60-57 at halftime.
Alex Abrines' 3-pointer gave the Thunder their biggest lead at 97-89 with 7:48 left, but Al-Farouq Aminu made a layup that tied it at 101 with 3:43 to go. He missed the free throw, but Jusuf Nurkic got the tip-in to give Portland the lead.
Lillard's 3-pointer extended it to 106-101 before Westbrook's driving layup and free throw pulled Oklahoma City to 110-106.
Abrines' 3-pointer with 17.7 seconds left narrowed it to 110-109. After the timeout, Lillard was fouled twice in the final seconds and made all four free throws before Westbrook and Doug McDermott missed 3-pointers at the end.
Nurkic, acquired by the Blazers just before the All-Star break in a trade with Denver, was a spark with 18 points, 12 rebounds, a career-high six assists and five blocks.
"He has a good sense of the game," Portland coach Terry Stotts said. "When you have that, I think the integration goes a little bit better."
Westbrook hit all 15 of his free throws. He had eight rebounds and four assists, ending a streak of four straight triple-doubles.
Enes Kanter added 18 points and 10 rebounds.
"Difference tonight was we just couldn't make our shots," Westbrook said. "We missed the same shots that we've been making every game."
The Thunder were coming off a 109-106 victory over Utah. Westbrook had 43 points, 11 rebounds and 10 assists in that game for his 30th triple-double of the season. The Thunder opened the game against the Jazz with 12 straight 3s.
The Blazers were coming off a 120-113 overtime loss at Detroit, which capped a 2-7 February.
The game marked the Thunder debut of guard Norris Cole, signed on Wednesday to help fill the void after the team traded backup point guard Cameron Payne to Chicago. Cole won NBA titles with the Miami Heat in 2012 and 2013, but most recently played with the Shandong Golden Stars of the Chinese Basketball Association.
Gibson and McDermott, acquired in the trade with the Bulls, were playing in their fourth game with the Thunder.
Cole hit a 3-pointer early in the second quarter, his first field goal with the team, and the Thunder went up 27-26. But the Blazers reclaimed the lead and went ahead 52-45 on Aminu's 3-pointer.
CJ McCollum's 3 gave Portland a 57-48 lead, but Westbrook made consecutive 3-pointers and three straight free throws to tie it before Gibson's stunning shot from beyond halfcourt.
The Thunder led 85-81 heading into the final period.