Season twenty of Dancing with the Stars premiered on March 16, 2015, and concluded on May 19, 2015.

This season marked the tenth anniversary of the show. In honor of this anniversary, winners Rumer Willis and Valentin Chmerkovskiy received a special 10th Anniversary golden Mirrorball Trophy. R5 singer Riker Lynch and Allison Holker finished in second place, while former soldier Noah Galloway and Sharna Burgess finished in third.

Cast Couples This season featured twelve celebrity contestants. Ten of the professional partners were revealed on February 11, 2015, on Good Morning America. Joining Lindsay Arnold, Sasha Farber, Henry Byalikov, and Jenna Johnson in the troupe this season were Alan Bersten, from the tenth season of So You Think You Can Dance, and Brittany Cherry. Eleven of the celebrity competitors and their professional partners were revealed on Good Morning America on February 24, 2015. Witney Carson's celebrity partner was reported to be Chris Soules from The Bachelor on March 4, 2015; Soules was later confirmed on March 10, nearly 12 hours after that show's finale.

Celebrity Notability Professional partner Status LMFAO singer, producer & rapper Eliminated 1st Model & actress Eliminated 2nd NFL defensive end Eliminated 3rd Television actress & author Eliminated 4th Soul singer Eliminated 5th The Hunger Games actress Eliminated 6th Shark Tank panelist & businessman Eliminated 7th The Bachelor star Eliminated 8th Olympic artistic gymnast Eliminated 9th Soldier & personal trainer Third place R5 singer & actor Runners-up Film & television actress Winners

Host and judges Tom Bergeron returned as host alongside Erin Andrews. Len Goodman, Carrie Ann Inaba, Julianne Hough, and Bruno Tonioli returned as judges.

Episodes

Scoring chart The highest score each week is indicated in with a dagger (), while the lowest score each week is indicated in with a double-dagger ().

Color key:

+Dancing with the Stars (season 20) - Weekly scores Couple Week 1 2 1+2 3 4 5 6 7 8 9 10 Night 1 Night 2 Rumer & Val1st323335 32+39=71 35+2=37 40+40= 38+30=68 40+40= +40= Riker & Allison2nd3132633438 37+39=37 39+39=78 40+30= 40+40= +40= Noah & Sharna3rd262753303228 29+39=68 36+2=38 31+32=63 36+30= 32+40= +36= Nastia & Derek4th303638 34+39=73 38+3= 36+40=76 40+30= Chris & Witney5th262827 31+39=70 34+30=64 Robert & Kym6th2828562934 28+39=33+29= Willow & Mark7th2532573234 34+39=73 37+2=39 Patti & Artem8th2528533027 29+39=68 Suzanne & Tony9th252853252828 Michael & Peta10th2628542430 Charlotte & Keo11th2648 Redfoo & Emma12th3153 Notes

Weekly scores Individual judges' scores in the charts below (given in parentheses) are listed in this order from left to right: Carrie Ann Inaba, Len Goodman, Julianne Hough, Bruno Tonioli.

Week 1: Premiere Night Couples performed the cha-cha-cha, foxtrot, or jive. Couples are listed in the order they performed.

CoupleScoresDanceMusic Willow & Mark 25 (6, 6, 6, 7) Cha-cha-cha "Lips Are Movin" — Meghan Trainor Robert & Kym 28 (7, 7, 7, 7) Cha-cha-cha "Bills" — LunchMoney Lewis Riker & Allison 31 (8, 7, 8, 8) Jive "What I Like About You" — The Romantics Charlotte & Keo 22 (6, 5, 5, 6) Jive "Shake a Tail Feather" — The Blues Brothers Patti & Artem 25 (7, 6, 6, 6) Foxtrot "Lady Marmalade" — Labelle Chris & Witney 26 (7, 6, 6, 7) Jive "Footloose" — Kenny Loggins Michael & Peta 26 (6, 6, 7, 7) Cha-cha-cha "Uptown Funk" — Mark Ronson, feat. Bruno Mars Nastia & Derek 30 (7, 7, 8, 8) Foxtrot "New York, New York (FWB Remix)" — Ray Quinn, feat. Ultra Love Redfoo & Emma 22 (6, 5, 5, 6) Cha-cha-cha "Juicy Wiggle" — Redfoo Noah & Sharna 26 (7, 6, 6, 7) Cha-cha-cha "I Lived" — OneRepublic Suzanne & Tony 25 (6, 6, 6, 7) Cha-cha-cha "Physical" — Olivia Newton-John Rumer & Val 32 (8, 8, 8, 8) Foxtrot "Take Me to Church" — Hozier

Week 2: My Jam Monday Couples performed one unlearned dance to one of their favorite songs, and are listed in the order they performed.

CoupleScoresDanceMusicResult Chris & Witney 21 (5, 6, 5, 5) Cha-cha-cha "Time of Our Lives" ― Pitbull & Ne-Yo Safe Suzanne & Tony 28 (7, 7, 7, 7) Jive "Whole Lotta Shakin' Goin' On" ― Jerry Lee Lewis Safe Robert & Kym 28 (7, 7, 7, 7) Foxtrot "You Make Me Feel So Young" — Michael Bublé Safe Charlotte & Keo 26 (7, 6, 7, 6) Cha-cha-cha "California Gurls" — Katy Perry, feat. Snoop Dogg Safe Michael & Peta 28 (7, 7, 7, 7) Foxtrot "Working My Way Back to You" — The Spinners Safe Rumer & Val 32 (8, 8, 8, 8) Cha-cha-cha "Rumour Has It" — Adele Safe Redfoo & Emma 31 (8, 7, 8, 8) Jive "My Sharona" — The Knack Eliminated Willow & Mark 32 (8, 8, 8, 8) Argentine tango "Somebody That I Used to Know" — Gotye, feat. Kimbra Safe Noah & Sharna 27 (7, 6, 7, 7) Samba "Homegrown Honey" — Darius Rucker Safe Nastia & Derek 34 (9, 8, 8, 9) Rumba "Thinking Out Loud" — Ed Sheeran Safe Riker & Allison 32 (8, 8, 8, 8) Foxtrot "Sugar" — Maroon 5 Safe Patti & Artem 28 (7, 7, 7, 7) Salsa "In da Club" — 50 Cent Safe

Week 3: Latin Night Couples performed one unlearned Latin-themed dance, and are listed in the order they performed.

CoupleScoresDanceMusicResult Rumer & Val 33 (8, 9, 8, 8) Salsa "Turn the Beat Around" — Gloria Estefan Safe Charlotte & Keo 22 (6, 5, 5, 6) Rumba "Empire" — Shakira Eliminated Michael & Peta 24 (6, 6, 6, 6) Salsa "Celebrate" — Pitbull Safe Riker & Allison 34 (9, 7, 9, 9) Salsa "Limbo" — Daddy Yankee Safe Suzanne & Tony 25 (6, 6, 6, 7) Samba "Copacabana" — Barry Manilow Safe Chris & Witney 28 (7, 7, 7, 7) Argentine tango "Dangerous" — David Guetta, feat. Sam Martin Safe Robert & Kym 29 (7, 7, 8, 7) Rumba "How Long Will I Love You?" — Ellie Goulding Safe Patti & Artem 22 (6, 5, 5, 6) Cha-cha-cha "Oye 2014" — Santana, feat. Pitbull Safe Willow & Mark 32 (8, 8, 8, 8) Paso doble "Hanuman" — Rodrigo y Gabriela, feat. John Tempesta Safe Noah & Sharna 30 (7, 7, 8, 8) Argentine tango "Rather Be" — Clean Bandit, feat. Jess Glynne Safe Nastia & Derek 34 (9, 8, 9, 8) Samba "Chillando Goma" — Fulanito Safe

Week 4: Most Memorable Year Night Couples performed one unlearned dance to celebrate the most memorable years of their lives. Couples are listed in the order they performed.

CoupleScoresDanceMusicResult Nastia & Derek 36 (9, 8, 9, 10) Argentine tango "Variations on Dark Eyes" — Lara St. John Safe Michael & Peta 30 (7, 7, 8, 8) Rumba "Not My Father's Son" — from Kinky Boots Eliminated Riker & Allison 34 (8, 8, 9, 9) Tango "Shut Up and Dance" — Walk the Moon Safe Robert & Kym 34 (8, 9, 8, 9) Waltz "The Last Waltz" — Engelbert Humperdinck Safe Chris & Witney 27 (7, 6, 7, 7) Rumba "The Book of Love" — Gavin James Safe Patti & Artem 30 (8, 7, 7, 8) Jazz "Dan Swit Me" — Patti LaBelle Safe Rumer & Val 35 (9, 8, 9, 9) Waltz "Turning Tables" — Adele Safe Suzanne & Tony 28 (7, 7, 7, 7) Foxtrot "Come and Knock on Our Door" — Ray Charles & Julia Rinker Safe Willow & Mark 39 (10, 9, 10, 10) Contemporary "Atlas" — Coldplay Safe Noah & Sharna 32 (8, 8, 8, 8) Contemporary "American Soldier" — Toby Keith Safe

Week 5: Disney Night Couples performed one unlearned dance to a song from a Disney film, and are listed in the order they performed.

CoupleScoresDanceMusicDisney filmResult Suzanne & Tony 28 (7, 7, 7, 7) Jazz "He's a Tramp" — Peggy Lee Lady and the Tramp Eliminated Robert & Kym 24 (6, 6, 6, 6) Quickstep "Step in Time" — Dick Van Dyke Mary Poppins Safe Patti & Artem 27 (7, 6, 7, 7) Waltz "When You Wish upon a Star" — Cliff Edwards Pinocchio Safe Willow & Mark 34 (8, 8, 9, 9) Foxtrot "Alice's Theme" — Danny Elfman Alice in Wonderland Safe Chris & Witney 27 (7, 6, 7, 7) Quickstep "Zero to Hero" — Ariana Grande Hercules Safe Noah & Sharna 28 (7, 7, 7, 7) Foxtrot "A Whole New World" — Brad Kane & Lea Salonga Aladdin Safe Riker & Allison 38 (10, 9, 9, 10) Paso doble "He's a Pirate" — Klaus Badelt Pirates of the Caribbean: The Curse of the Black Pearl Safe Rumer & Val Samba "Poor Unfortunate Souls" — Pat Carroll The Little Mermaid Safe Nastia & Derek 38 (9, 9, 10, 10) Jazz "Love Is an Open Door" — Kristen Bell & Santino Fontana Frozen Safe

Week 6: Spring Break Night Couples performed one unlearned dance and a team dance. Couples are listed in the order they performed.

CoupleScoresDanceMusicResult Patti & Artem 29 (8, 7, 7, 7) Quickstep "Heat Wave" — Martha and the Vandellas Eliminated Nastia & Derek 34 (9, 8, 8, 9) Tango "Summer" — Calvin Harris Safe Willow & Mark 34 (9, 8, 8, 9) Salsa "Tequila" — Xavier Cugat Safe Robert & Kym 28 (7, 7, 7, 7) Jive "Surfin' Safari" — The Beach Boys Safe Noah & Sharna 29 (7, 7, 7, 8) Rumba "Waves" — Mr Probz Safe Rumer & Val 32 (8, 8, 7, 9) Jazz "Bootylicious" — Destiny's Child Safe Chris & Witney 31 (8, 7, 8, 8) Viennese waltz "Hopelessly Devoted to You" — Olivia Newton-John Safe Riker & Allison 37 (10, 8, 9, 10) Samba "Want to Want Me" — Jason Derulo Safe Nastia & DerekNoah & SharnaRobert & KymWillow & Mark 39 (10, 9, 10, 10) Freestyle(Team YOLO)"Wipe Out" — The Surfaris Chris & WitneyPatti & ArtemRiker & AllisonRumer & Val 39 (10, 9, 10, 10) Freestyle(Team Trouble)"Trouble" — Iggy Azalea, feat. Jennifer Hudson

Week 7: Eras Night Couples performed one unlearned dance representing a different historical era. The couple with the highest score earned immunity from elimination, while the rest of the couples participated in dance-offs for extra points. For each dance-off, the couple with the highest score picked the opponent against whom they wanted to dance; the chosen opponent was allowed to pick the dance style (from cha-cha-cha, foxtrot, or salsa). The winner of each dance-off earned two points. For winning immunity, Nastia & Sasha received a three-point bonus. Couples are listed in the order they performed.

CoupleScoresDanceEraMusicResult 37 (9, 10, 9, 9) Quickstep 1920s "Wiggle" — Scott Bradlee & Postmodern Jukebox Safe Chris & Witney 31 (8, 7, 8, 8) Foxtrot 1940s "Five Minutes More" — Frank Sinatra Safe Rumer & Val 35 (8, 9, 9, 9) Jive 1960s "Dear Future Husband" — Meghan Trainor Safe 36 (10, 8, 9, 9) Jazz 1970s "Super Bad" — James Brown Safe Robert & Kym 31 (7, 8, 8, 8) Argentine tango 1980s "Word Up!" — Cameo Safe Charleston Modern "Honey, I'm Good." — Andy Grammer Immunity Willow & Mark 37 (9, 9, 9, 10) Jazz Futuristic "Electric Feel" — MGMT Eliminated

+Dance-offsCoupleDanceMusicResult Willow & MarkSalsa"Temperature" — Sean Paul Winners Riker & Allison Losers Noah & SharnaCha-cha-cha"Dance with Me" — Kelly Clarkson Winners Robert & Kym Losers Rumer & ValFoxtrot"Orange Colored Sky" — Nat King Cole Winners Chris & Witney Losers

Week 8: America's Choice Night Couples performed a routine featuring an unlearned dance and song that was chosen by the public, as well as a trio dance involving an eliminated pro or a member of the dance troupe. Couples are listed in the order they performed. Two couples were eliminated at the end of the night.

CoupleTrio partnerScoresDanceMusicResultNoah & Sharna Emma Slater 31 (8, 7, 8, 8) Tango "Geronimo" — SheppardSafe 32 (8, 8, 8, 8) Salsa "Mr. Put It Down" — Ricky Martin, feat. PitbullChris & Witney Lindsay Arnold 34 (9, 8, 9, 8) Contemporary "Lay Me Down" — Sam SmithEliminated 30 (7, 7, 8, 8) Paso doble "Outside" — Calvin Harris, feat. Ellie GouldingRiker & Allison Brittany Cherry 39 (10, 9, 10, 10) Viennese waltz "What Now" — RihannaSafe 39 (10, 9, 10, 10) Jazz "A Little Party Never Killed Nobody (All We Got)" — Fergie, Q-Tip & GoonRockRobert & Kym Jenna Johnson 33 (8, 8, 9, 8) Contemporary "Champagne Kisses" — Jessie WareEliminated 29 (7, 7, 8, 7) Samba "Cinema Italiano" — Kate HudsonNastia & Sasha Derek Hough 36 (9, 9, 9, 9) Paso doble "Centuries" — Fall Out BoySafe 40 (10, 10, 10, 10) Jive "Diane Young" — Vampire WeekendRumer & Val Artem Chigvintsev 40 (10, 10, 10, 10) Rumba "Perhaps, Perhaps, Perhaps" — Doris DaySafe Paso doble "Scott & Fran's Paso Doble" — David Hirschfelder & The Bogo Pogo Orchestra

Week 9: Semifinals