Xiao, world number 31, turned pro in 2007 after winning the Asian U21 Championship. His best ranking performances were runner-up finishes at the 2013 Shanghai Masters and the 2017 Shoot Out.
In his 30-minute ruling, SDT chairman John Ohaga explained that KPL CEO Jack Oguda did not exhaust all international conflict resolution mechanisms before taking FKF to the Tribunal.
The 29-year-old midfielder joined the Reds with a reported fee of 20 million pounds (about 25.8 million US dollars) for four years to become the club's second signing of the summer transfer window, following Kostas Tsimikas in August.
The hero of the night became the home team's Moldavian striker Ion Nicolaescu who tied the game five minutes before the end of regulation on his debut and then put Dunajska Streda ahead 4-3 six minutes into overtime with a quick and un-saveable shot from the edge of the box.
"We had chances to score in the first half, but we missed all of our good chances," Tuchel said.
Nadal, seeded second, lost 6-2, 7-5 to eighth-seeded Schwartzman, who will next play 12th seed Denis Shapovalov of Canada for a spot in the final.
Granada dedicated the rest of the game to conserving energy ahead of their weekend La Liga game at home to Alaves, while the home side were reduced to 10 men in the 80th minute after Fabjan Beqja was sent off for two yellow cards.
Elsewhere, Hebei took a lead in the 10th minute, when Buya Turay's long distance pass found Ricardo Goulart in the box, who volleyed to the corner of the net.
"It is a good start to the Bundesliga season but most importantly, we won today. I am of course delighted that I was able to help my team with a goal," Hertha defender Pekarik said.
Jablonec took the lead for the first time 12 minutes into the second half after the Slovak striker Ivan Schranz tapped in a loose lob from his teammate past the outstretched Dunajska Streda's goalkeeper Martin Jedlicka.
"I don't think David is demanding to stand above those two," the 43-year-old said.