IWS announced a talent partnership with AAA and Lucha Underground. IWS clashed with CZW at Freedom to Fight on October 17 at Le Skratch in Laval, where the IWS Canadian Championship, CZW World Tag Team Championship and CZW World Heavyweight Championship titles were successfully defended. On September 9, 2018, Mike Bailey defeated Psicosis and Argenis in a 3-Way Dance, at an IWS vs AAA spot show for the Montreal Mercado del Taco. On April 6, 2019, IWS presented Unstoppable, as part of GCW's The Collective. On October 12, in response to WWE pulling Moustache Mountain from their scheduled appearance, IWS announced TDT vs a surprise tag team from AEW at One Night Only, on November 8 at Club Unity. On October 24, IWS announced Private Party vs TDT in an IWS World Tag Team Championship Match at One Night Only. In 2022, many IWS wrestlers were featured as extras for both AEW and WWE. Zak Patterson and Ben Ortmanns appeared in segments featuring Ronda Rousey on WWE SmackDown, while JT Producer was in a 2-on-1 Handicap Match vs Omos on WWE Raw in Edmonton. Zak Patterson, Shayne Hawke and JT Producer faced The Dark Order (Evil Uno, Alex Reynolds, 10, John Silver) on AEW Dark in Toronto. On December 3 at Season's Beatings, PCP Crazy F'N Manny was reminiscing about IWS' various accomplishments, when Nick Gage appeared on-screen to declare a GCW invasion versus IWS, with two Canadian events later confirmed to be held in Montreal and Toronto in March 2023. Championships Current champions IWS World Heavyweight Championship Reigns As of , Combined reigns As of , {| class="wikitable sortable" style="text-align: center" !Rank !Wrestler !No. ofreigns !Combineddefenses !Combineddays |- !1 | Mike Bailey || 2 || 8 || 824 |- !2 | SeXXXy Eddy || 4 || 5 || 814 |- !3 | Matt Angel || 1 || 2 || 714 |- !4 | The Green Phantom || 3 || 7 || 653 |- !5 | Kevin Steen || 3 || 11 || 473 |- !6 | Viking || 1 || 9 || 441 |- !7 | Beef Wellington || 1 || 3 || 420 |- !8 | Buxx Belmar || 1 || 7 || 385 |- !9 | Nixon Stratus || 1 || 1 || 357 |- !10 | Black Dynomite || 1 || 3 || 336 |- !11 | eXceSs || 1 || 7 || 322 |- !12