I didn't get much sleep recently so I slept after the roof was closed when Wu was down 5-7 0-1*, but not that surprised he managed to come back after adapting to the indoor conditions. Wu is a legit top 20-30 level player indoors, but he can't stay healthy long enough to get direct entry to indoor tournaments. All his most impressive performances like against Fritz in Dallas, Alcaraz in Shanghai last year and today were under a closed roof, while outdoors he often runs out of gas easily.