China's Wu Di came back from two sets down to give his country an unassailable 3-1 lead on Wednesday in the Davis Cup tie against New Zealand.
In the northern port city of Tianjin, world No.291 Rubin Statham took the first two sets for the visitors, both on tiebreakers, but the home side's Wu, ranked almost 100 places higher at 198, fought all the way back to take it 6-4 in the decider.
The win put China 3-1 up in the tie, and the match between China's Zhang Ze and New Zealand's Michael Venus was abandoned unplayed, the Davis Cup website said.
New Zealand, who had won all but one of the two countries' six previous Davis Cup encounters, are newly promoted to Group 1 after beating the Philippines in September.
China had to face Chinese Taipei in a relegation playoff in April to stay in the division, which proved to be a comfortable 5-0 whitewash.
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