Philippe Coutinho also has a lot to prove after his loan spell at Bayern, while questions remain over what style of play Koeman will look to impose.
The Celta captain opened the scoring after receiving a pass from Nolito after 15 minutes in an entertaining match which saw Celta play some impressive football.
The match was decisive to both teams, as only two rounds were left in the first phase. Sierra Leone striker Buya Turay broke the deadlock for Hebei in the 7th minute with a volley from a cross by Marcao.
His unexpected exit at the US Open didn't affect Djokovic's subsequent performance, as the 33-year-old clinched his 36th Masters title in Rome on Monday, defeating old rival Rafael Nadal.
Elsewhere, Borussia Monchengladbach are still waiting for their first win of the season as they shared the spoils with Union Berlin following a 1-1 draw.
In light of these developments, and recent enthusiasm for skiing in China, Xinhuanet talked exclusively to Chinese amateur skiers, to know more about why they fell in love with skiing and get their perspective on the growth of the sport.
Qingdao went one player down eight minutes after the break as Yin Yaji collected his second yellow card.
The 24-time Norway international follows Josep Martinez, Hee-Chan Hwang, Benjamin Henrichs, Lazar Samardzic and Angelino as the sixth new arrival of the summer transfer period.
Yan, 20, faced his fourth-round opponent Aaron Hill after the 18-year-old had stunned six-time world champion Ronnie O'Sullivan earlier in the draw, but only managed to claim one frame against Yan, who ranks 15th in the world.
LONDON, Sept. 22 (Xinhua) -- Rennes goalkeeper Edouard Mendy had a medical at Chelsea on Tuesday ahead of completing a move worth 22 million pounds (28 million U.S. dollars) from Rennes.
Markao (C) of Hebei China Fortune shoots and scores during the 13th round match between Wuhan Zall and Hebei China Fortune at the postponed 2020 season Chinese Football Association Super League (CSL) Suzhou Division in Suzhou, east China's Jiangsu Province, Sept. 25, 2020. (Xinhua/Han Yuqing)