The 2018 mid-year rugby union internationals (also known as the summer internationals in the Northern Hemisphere) are international rugby union matches that are mostly played in the Southern Hemisphere during the June international window. The matches are part of World Rugby's global rugby calendar (2012–19) that includes test matches between touring Northern Hemisphere nations and home Southern Hemisphere nations. In addition, the global calendar gives Tier 2 nations the opportunity to play Tier 1 nations outside the November International Window, increasing competitiveness from the Tier 2 sides ahead of the 2019 Rugby World Cup. Series Fixtures 27 May Notes: This is the first time since 2014 the Barbarians had defeated England. 31 May 2 June Notes: Tomos Williams (Wales) and Robert du Preez, Thomas du Toit, André Esterhuizen, Travis Ismaiel, Jason Jenkins, Makazole Mapimpi, Ox Nché, Sikhumbuzo Notshe, Marvin Orie, Embrose Papier, Kwagga Smith, Akker van der Merwe and Ivan van Zyl (all South Africa) made their international debuts. This victory saw Wales record a record third consecutive win against the Springboks. 9 June Notes: This is Japan's biggest winning margin over a Tier 1 Nation, surpassing the 15-point difference set in 1998 and 2013 with wins over Argentina and Wales. Giosuè Zilocchi (Italy) made his international debut. Notes: Karl Tu’inukuafe (New Zealand) made his international debut. Beauden Barrett, Jordie Barrett and Scott Barrett became the first trio of brothers to start in an All Blacks XV. Notes: Brandon Paenga-Amosa, Pete Samu and Caleb Timu (all Australia) made their international debuts. Notes: Aphiwe Dyantyi, Sbu Nkosi and RG Snyman (all South Africa) and Brad Shields and Ben Spencer (both England) made their international debuts. Siya Kolisi became the first non-white South African captain. Mako Vunipola (England) earned his 50th test cap. Notes: Javier Díaz, Bautista Delguy and Santiago Medrano (all Argentina) and Aaron Wainwright (Wales) made their international debuts. This is Wales' first victory over Argentina in Argentina since their 35–20 win in 2004. Notes: Paul Mullen (United States) and Anton Drozdov (Russia) made their international debuts. The 49-point difference set surpasses the previous record set in 2004 when the United States won by 30 points (41–11) Notes: Theo Sauder (Canada) and Lewis Carmichael, Adam Hastings, James Lang and Jamie Ritchie (all Scotland) made their international debuts. Nick Blevins and Phil Mack (both Canada) earned their 50th test cap. 16 June Notes: Yu Tamura (Japan) earned his 50th test cap.