CALGARY - Their discipline left something to be desired.

Other than that, though, the Calgary Roughnecks made a positive impression in their first tuneup for the 2012 National Lacrosse League campaign.

Despite surrendering eight powerplay goals, including seven in the second quarter alone, the Riggers registered a 12-10 victory over the Colorado Mammoth in Sunday’s scrimmage in Langley, B.C.

“It was pretty impressive,” Roughnecks GM Mike Board said. “We did a lot of really good things on offence. We only gave up two goals five-on-five. If we were a little more disciplined, it would’ve been a larger result.”

A few familiar names led the offensive charge for the Roughnecks in Sunday’s game, with Daryl Veltman scoring four times, fellow lefty Jeff Shattler netting a hat-trick and Curtis Dickson potting a pair.

Some of the youngsters capitalized on their first taste of game action, too.

Board was particularly impressed with rookie goalie Frank Scigliano, who only allowed one goal in the fourth quarter, and noted Travis Cornwall and Greg Harnett “didn’t look out of place” in their debuts.

The Riggers brass will get another look at the hopefuls next weekend in a scrimmage against the Edmonton Rush.

“With the talent we’ve got on our team, we’ve got some tough decisions to make,” Board said. “And it didn’t get any easier today.”