Week 4 followed 10 pairs dancing their way through the show. Among the contenders, Alfonso Ribeiro and Witney Carson stood out with a perfect score of 40 while the week closed with a farewell to Betsey Johnson and Tony Dovolani.

In week 5, the segment called "The Switch Up" will shake things up a bit. The new pairings have been determined and here's the list of the contenders paired up to become new couples for the Oct. 13 show.

To perform flamenco, strong competitor Alfonso Ribeiro will have Cheryl Burke as his new grooving partner, while Ribiero's original partner, Witney Carson, gets paired up with Michael Waltrip to rock disco. Jonathan Bennett and Peta Murgatroyd will join up for the jitterbug, and Bennett's former partner, Allison Holker, will create a duo with Antonio Sabato Jr. for Bollywood dancing. Tommy Chong will perform mambo with Murgatroyd's former partner, Emma Slater.

For some direct switch-ups, Lea Thompson will be together with Val Chmerkovskiy for Broadway, and Artem Chigvintsev pairs up with Janel Parrish for a burlesque performance. Lastly, Mark Ballas will do some hip hop with new partner Bethany Mota, while Sadie Robertsons will temporarily interrupt Derek Hough's speculated budding romance with Mota for a good old Charleston.

Meanwhile, the show has sparked some dating rumors, too. However, an article in The Epoch Times already dispelled the rumors surrounding Hough and Mota chemistry beyond dancing. There is the 12-year age gap — Hough, 30 and Mota, 18. And also Hough was reportedly with Jessica Lee Keller already, although fans say otherwise. Another romantic link reportedly building up is between Val Chmerkovskiy and Janel Parrish, which was immediately slammed with news saying Parrish is dating Payson Lewis.

Bruno Tonioli, Len Goodman and Julianne Hough will continue to guide the couples in Week 5 along with new judge, Jessie J, who will treat fans with performances of her most popular hits.