 Deck was also the top scorer of the competition, with a scoring average of 19.1 points per game, over 8 games played.On July 19, 2018, he signed a three-year deal with Real Madrid of the Liga ACB and EuroLeague, after he reached a buyout agreement with San Lorenzo.In his first season with the club, he made a debut in the 2018–19 EuroLeague season, averaging 4.4 points and 2.4 rebounds over 31 games.