 In September 2015 it was reported that Marczyński would join for the 2016 season, returning to the WorldTour ranks for the first time since 2013.He was named in the start list for the 2017 Giro d'Italia.In the 2017 Vuelta a Espana, Marczynski achieved his greatest successes to date in Grand Tours by winning two stages, the 6th and the 12th.