The Wolves were handed their first loss of the regular season, doubled 4-2 by the Timmins Majors as Alexandre Brisson enjoyed a two-goal effort for the winners.
Dillan Bruce and Bailey Boucher rounded out the scoring for Timmins, as Devon Debastos backstopped the Majors to victory between the pipes. Ryley Chum and D.J. Hancock countered with goals for Sudbury, who saw their record fall to 4-1.
Their total of eight points leaves Sudbury deadlocked with both Timmins and Kapuskasing, two points back of New Liskeard, one ahead of Nickel City and two up on North Bay.
The Sons opened a two-game weekend set in New Liskeard with a 5-4 overtime loss to the Cubs as Jacob Jamieson scored just under two minutes into the four-on-four extra session. Maxime Beaulac, Marshal Nikitin, Justin Brazeau and Calvin Chartrand completed the attack for the homeside, with call-up Bradley Chenier scoring twice for Nickel City.
Denver Ghent and Alain Sicard also found the back of the net for coach Joel Whissell and company.
On Saturday, New Liskeard used a pair of power-play goals to upend Nickel City 4-1 as Ryan Murdoch, Gabriel Rheault, Jacob Leveillé and David Elford provided the offence.
Cole Braney netted a second-period goal for the visitors, the only puck to elude Cubs' netminder Simon Dietrich.
The only remaining GNML encounter last week saw the Kapuskasing Flyers outscore Timmins 7-4 on home ice as Miguel Castillo paced the attack with a pair of goals.
Kezmin Madden, Shadow Reuben, Kyle Sanford, Brady Clouthier and Cameron Etherington chipped in with one marker apiece, while Brett Andrews (2), Wayne Mathieu and Dalton Bruce answered in a losing cause.
The GNML league schedule takes a back seat this week as New Liskeard, North Bay, Nickel City, Kapuskasing and Timmins all travel to the nation's capital, competing in the ninth annual Ottawa Senators Midget AAA Showcase.
The tournament has attracted a field of 25 teams, including the likes of the North York Rangers, Ottawa Jr 67's, York Simcoe Express, Toronto Jr Canadiens and Don Mills Flyers.
Action begins today, with the entire Northern Ontario contingent starting up tomorrow. Nickel City faces the Oakville Rangers and OHA Mavericks Gold on Friday, with tilts against the Don Mills Flyers and Oshawa Generals slated for Saturday.