Overview
- Tom Bergeron returned to the ballroom as a guest judge for the 20th anniversary episode, which also featured an opening number with six original Season 1 pros choreographed by Derek Hough.
- Four couples earned perfect 40s: Robert Irwin with Witney Carson, Dylan Efron with Daniella Karagach, Alix Earle with Val Chmerkovskiy, and Whitney Leavitt with Mark Ballas.
- Relay winners earning two bonus points each were Jordan Chiles with Apolo Anton Ohno, Dylan Efron with Rumer Willis, and Robert Irwin with Xochitl Gomez, while Whitney Leavitt and Mark Ballas were exempt via immunity.
- Andy Richter and Emma Slater were eliminated after combined judges’ scores and live viewer votes.
- The six semifinalist pairs are Robert Irwin & Witney Carson, Whitney Leavitt & Mark Ballas, Alix Earle & Val Chmerkovskiy, Elaine Hendrix & Alan Bersten, Jordan Chiles & Ezra Sosa, and Dylan Efron & Daniella Karagach, following an in‑memoriam tribute to past DWTS performers.