The duels conclude with the judges having picked which acts go head-to-head in epic dance battles for a spot in the semi-finals; guest judge tWitch decides which acts will battle in redemption and earn a spot in the semi-finals on the stage.
| Title | World of Dance - Season 4 Episode 9 The Duels 4 |
|---|---|
| Year | 2020 |
| Genre | Reality |
| Country | |
| Studio | NBC |
| Cast | Jennifer Lopez, Ne-Yo, Derek Hough, Jenna Dewan |
| Crew | |
| Alternative Titles | 世界之舞, 世界舞蹈大赛 |
| Keyword | competition, dance |
| First Air Date | May 30, 2017 |
| Last Air date | Aug 18, 2020 |
| Season | 4 Season |
| Episode | 50 Episode |
| Runtime | 26:14 minutes |
| Quality | HD |
| IMDb: | 8.30/ 10 by 41.00 users |
| Popularity | 8.888 |
| Language | English |
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