The Swiss need a positive result from their visit to Madrid after losing to Ukraine and being held at home by Germany, but with players such as Granit Xhaka in their side they are likely to provide another stiff test for Spain. Enditem
The source also indicated that it was because Lim's promises regarding signings had not been fulfilled.
Facing a perfect Nadal, Djokovic was unable to hold any of his three service games in the first set, and finally secured his first service of the match in the opening game of the second set, after saving three break points. But the Spaniard quickly broke twice in the third and fifth game to storm to a 4-1 lead.
"We didn't execute as we prepared. Some players didn't respond well," rued Shandong coach Luka Sjekloca.
Luis Enrique will make changes to his side on Saturday with goalkeeper David de Gea likely to replace Kepa Arrizabalaga, who will have been happy to keep a clean sheet in Lisbon after his recent troubles at Chelsea.
It's still not certain whether Real Sociedad's Mikel Oyarzabal will be able to take part after he was unable to travel to Lisbon after an inconclusive COVID-19 test.
It was a finely balanced game with two teams consistently within five points of each other. Both sides traded the lead 11 times until the final minute of play.
Lucenec started off strongly and built a vital 12-point lead at half-time. However, the host team gradually closed the deficit in the second half.
In the day's other game, Shaanxi used a dominant 29-4 first quarter to overwhelm Daqing.
Germany is in danger of being relegated to Nations League Group B this season after two draws against Spain and Switzerland.
"We improved our ball movement with the match going deep. The players had expected to win this match," said Zhejiang coach Gu Jiaqing.