Over the last games Cilic, Marin holds wins - 1, losses - 4. Zhang, Zhizhen on the other hand ends the latest games with wins - 1, losses - 4. Based on this data a conclusion can be made that rivals are in similar shape.
Cilic, Marin: Nikoloz Basilashvili – (Loss 0:2), Yosuke Watanuki – (Loss 2:0), Adam Walton – (Win 1:2), Arthur Fery – (Loss 2:0), Daniel Merida – (Loss 2:1).
Zhang, Zhizhen: Yi Zhou – (Loss 0:2), Kaichi Uchida – (Win 2:0), Lan, Xiran – (Loss 1:2), Tomas Machac – (Loss 1:2), Arthur Gea – (Loss 0:2).Both contenders have moved to the round_of_32 while defeating worthy opponents on their way there. In tournaments as Seoul each event is meaningful which is why a great matchup awaits us.