Aaron Murphy claimed a crucial try as Wakefield Wildcats got their Engage Super League campaign under way with a hard-fought 18-10 win away to Harlequins.
In a game that saw two red cards and plenty of physicality, full-back Murphy touched down to settle matters just as the hosts looked to force their way back into the contest.
Wakefield's Richard Moore and the home side's Louie McCarthy-Scarsbrook were the players dismissed in the closing stages.
Using their superior physical strength to bully Harlequins in the tackle, the Wildcats spent most of the opening 15 minutes camped in their hosts' half. A combination of poor final passes and excellent defence kept the scoreboard blank until the 13th minute, when Wakefield finally took a deserved lead.
After a succession of drives close to the home line, Danny Brough teased a kick to the corner and Daryl Millard leapt highest above Chris Melling to claim and crash over.
Having been under pressure virtually from the start, Quins claimed a try of their own with their first real attack. It was a supremely well-crafted move, with Chad Randall and Luke Gale combining to put Ben Jones-Bishop into space, and the full-back - on his debut - scorched through the gap to touch down.
Wakefield moved further ahead when Murphy set off on a weaving run which sliced open the defence before offloading for Ben Jeffries to storm over.
Although the visitors had the edge at the interval, Quins hauled themselves back into the contest straight after the restart thanks to Jones-Bishop, who stretched over the line, evading three tacklers, after Oliver Wilkes had gone close to touching down himself.
But after another spell of pressure, the Wildcats scored again when Murphy took an inside pass and barged over.
In a ragged final 10 minutes, Quins tried to attack from all over the pitch but were kept in check by a determined Wakefield defence, with both Moore and McCarthy-Scarsbrook seeing red as tempers flared.