See main article: article and 2018 Erste Bank Open.
Lucas Pouille was the defending champion but lost to Borna Ćorić in the second round.
Kevin Anderson won the title, defeating Kei Nishikori in the final, 6–3, 7–6(7–3). Anderson saved a match point in his opening round match against Nikoloz Basilashvili.
This was Nishikori's ninth consecutive defeat in ATP World Tour level finals. His most recent victory came in February 2016 at Memphis.