De Giorgi made his debut as a head coach of Poland in friendly match with Iran without losing any set, on 20 May 2017. The match was a goodbye match for notable libero Krzysztof Ignaczak, who officially ended up his career in national team. Then Poland took part in intercontinental round of the 2017 FIVB World League. In first week, Poland beat Brazil (3–2) and Italy (3–1), but lost match with Iran (1–3). Overall, Poland won 4 and lost 5 meetings. They lost a chance to advance to Final Six after losing match with United States (1–3) on 18 June. In final standing Poland took 8th place.