Oreshkin qualified for the 2016 PDC World Darts Championship after defeating Anton Kolesov in the final of the Russian Qualifier. He played against Singapore's Paul Lim in the preliminary round, winning in a sudden-death leg to qualify for a first round match against 14th seed Mervyn King. Oreshkin won the first two sets before King took nine of the next 12 legs to win 3–2. Oreshkin partnered Boris Koltsov at the World Cup of Darts and they lost 5–3 to the Netherlands in round one.