Did somebody say upset? 



Day four of the 2021 IIHF World Championship was another rollercoaster ride! 



Caroline and Lucas have got the lowdown on Monday's games - including the Canadians slumping to 0-3 for the first time EVER at this competition - and Slovakia getting the better of Russia after 17 years. 



Our 'on this day' takes us back to 2014 - and an unforgettable encounter between Oleg Znarok and Rikard Gronborg in Minsk. 



Then, we look ahead to what's in store on day five in Riga.