Fifth-place finishers at the 2017 FIVB World Championships, Kantor and Losiak will be participating in their second SWATCH FIVB World Tour Finals after qualifying via their international ranking. Kantor and Losiak placed fifth on the 2016 SWATCH event in Toronto after being eliminated by Ben Saxton and Chaim Schalk of Canada. Despite both players being 25, Kantor and Losiak rank with Italians Daniele Lupo/Paolo Nicolai as the second-most experienced team in the SWATCH FIVB World Tour Finals in terms of FIVB World Tour participations together (66). Kantor and Losiak competed in the Rio 2016 Olympic Games and placed 17th with their last two setbacks to medal winning teams on Copacabana - Alexander Brouwer/Robert Meeuwsen of The Netherlands (bronze) and Lupo/Nicolai (silver). Both players have been playing in FIVB events since 2009 as Kantor and Losiak have three youth world championships to their credit along with the world tour gold medal in 2016 at the Rio Grand Slam. The Polish pair has netted nine medals in 66 world tour appearances.