CALGARY, Alberta (AP) -- Shea Weber's power-play goal in the second period stood up as the winner, helping the Nashville Predators complete a perfect road trip with a 2-1 win over the Calgary Flames on Wednesday night.
The Predators, who opened the night one point out of a wild-card spot in the Western Conference, finished a four-game trip 4-0-0, having also beaten Winnipeg, Edmonton and Vancouver.
Mike Ribeiro also scored for Nashville, and Mattias Ekholm had an assist to extend his points streak to a career-high five games.
Mark Giordano scored the lone goal for Calgary, which has lost three in a row.
In the second period, Flames defenseman Dennis Wideman sent linesman Don Henderson to the ice when he checked him from behind. Wideman was skating toward the Flames' bench when he cross-checked Henderson. It wasn't immediately clear if Wideman mistook Henderson for a Predators player or intentionally hit the linesman.
At the next stoppage, it appeared Wideman skated over to where the officials were gathered - but Henderson didn't stick around, quickly skating away.
The Flames were back at home after a 1-3-1 road trip that saw them fall eight points out of a playoff spot in the Western Conference. Calgary mounted a furious rally late in the third period, but could not get the tying goal past Carter Hutton.
With Pekka Rinne getting the night off after facing the Canucks on Tuesday, Hutton made 26 saves, including 15 in the final 20 minutes, to improve to 5-2-1. Karri Ramo had 22 stops to fall to 16-17-1.
Calgary closed the gap to 2-1 on Giordano's goal 5:48 into the third period.
After his first shot hit Weber, Giordano corralled the loose puck, circled back to the blue line and ripped a slap shot from 40 feet out. It ended Hutton's shutout streak at 106:02. He had 29 saves in a 4-0 win over Minnesota in his last start on Jan. 16.
Nashville extended its lead to 2-0 on Weber's one-timer at 17:37 of the second. The power-play goal against the Flames' 29th-ranked penalty kill came after Calgary's 30th-ranked power play had squandered three straight man advantages in the first period.
Nashville opened the scoring 6:21 into the game when Craig Smith burst into the Flames' end and dropped a pass into the slot to Ribiero, whose shot squeaked through Ramo.
NOTES: Eric Nystrom (foot) did not play for Nashville. ... Out of the lineup for the Flames were Joe Colborne and Josh Jooris, who both suffered minor undisclosed injuries Monday in Dallas. ... Weber's nine power-play goals rank him second among defensemen.