The shooters were Swarming the net, firing constantly at Nick Patterson.
The Minnesota Swarm goalie stood in there and blocked shot after shot until a major penalty expired.
When it did, Patterson made the Calgary Roughnecks pay again by hitting the offender Richard Morgan for a breakaway goal.
The key sequence in the third quarter spurred the Swarm to a 17-13 victory over the Roughnecks Friday night in front of 10,486 spectators at the Saddledome.
The loss drops the Riggers to 6-5 with a pair of road games next weekend in Toronto and Rochester.
The Swarm improve to 5-5 and now have the crucial tiebreaker in the season series with Calgary.
Ryan Benesch had two goals and nine assists to pace the Swarm offence. Aaron Wilson had four goals, Kyle Ross had a hat-trick while Callum Crawford and Sean Pollock each had a pair. Richard Morgan, Andrew Watt and Jon Sullivan had singles.
Dane Dobbie had five goals for the Roughnecks, who were missing three regulars due to injury.
Scott Ranger, Craig Conn, and Peter McFetridge had a pair each, while Nolan Heavenor and Jeff Shattler had the others.
Elsewhere in the NLL, the first-place Washington Stealth improved to 8-3 with a 15-14 victory over the Colorado Mammoth, who are last in the West Division at 2-8.
At the Saddledome, the home side took the lead to start the third quarter after Morgan cross-checked Ranger in the face and received a major.
It didn’t take long to convert as Dobbie scored his hat-trick marker, but after peppering Patterson with about a dozen shots, Minnesota managed to kill off the major.
When Morgan stepped out of the box, Patterson hit him on a long bomb pass to make it 8-8.
Another cross-check to the face hurt the Riggers. Shattler took the stick of Benesch in the corner and it sent his helmet flying, but no penalty was called and Benesch fed Pollock for a goal.
But McFetridge scored his second of the season before the third period was and the teams were tied 10-10 after 45 minutes.
With both Kaleb Toth (knee) and Tracey Kelusky (concussion-like symptoms) both sitting out — the second time in franchise history at least one of them didn’t play — Heavenor and Shattler moved up on offence.
The replacements connected immediately, as Shattler set up Heavenor just 1:21 into the game for just his second goal this season.
Shattler had three helpers in the first half to help the Riggers pick up from losing their captain and assistant.
The team went into halftime tied 7-7 after ending the first quarter knotted up 3-3.
The Riggers ran into some penalty trouble midway through the second quarter, as Curtis Manning took a high-sticking major and then Andrew McBride took a minor on the delayed call.
Wilson scored the second of his first-half hat-trick to bring McBride out of the box and then former Rigger Crawford scored before Manning was out.
Wilson’s hat-trick marker chased Roughnecks starting goalie Mike Poulin, who allowed seven goals on 18 shots before being replaced by Matt King.
King didn’t fare much better, allowing seven goals on 14 shots and giving way to Poulin with eight minutes left in the fourth quarter.
Dobbie started the second quarter with two straight goals, just 19 seconds apart, while McFetridge, who was playing in place of injured regular Scott Carnegie (concussion), notched his first of the season.
The Roughnecks got good news before the game. Toth and wife Mary-Ann welcomed baby girl Lillianna, weighing 8 lb., three ounces, born at 2:30 p.m. Friday afternoon.