Jesse Tyler Ferguson Guest Judges, Jason Mraz Performs on Tonight's SYTYCD

Jesse Tyler Ferguson Guest Judges, Jason Mraz Performs on Tonight's SYTYCD

Zack Everhart, Jessica Richens, Valerie Rockey and Ricky Ubeda are the Top Four finalists on SO YOU THINK YOU CAN DANCE, and move one step closer to becoming America's Favorite Dancer! After a dramatic vote on tonight's show, Casey Askew and Jacque LeWarne were eliminated. Also, Rixton performed their hit single, "Me and My Broken Heart."

Tonight, Aug. 27 (8:00-10:00 PM ET live/PT tape-delayed), on FOX, the Top Four - Zack Everhart, Jessica Richens, Valerie Rockey and Ricky Ubeda - will be paired up with All-Star Partners to perform for America's votes, leading up to the highly-anticipated Season Finale airing Wednesday, Sept. 3 (8:00-10:00 PM ET live/PT tape-delayed).

On this week's show, returning guest judge Jesse Tyler Ferguson ("Modern Family") will join judges Nigel Lythgoe and Mary Murphy. The All-Stars include Aaron Turner (Season Ten), Kathryn McCormick (Season Six) and Robert Roldan (Season Seven). Also, tune in for a special appearance from Jason Mraz, who will perform his hit single, "Love Someone," from his latest album, "Yes!"

SO YOU THINK YOU CAN DANCE boasts some of television's most passionate fans, and here's what the Top Four had to say to those who have supported them:

Zack Everhart: "I want to give a huge thank you to everybody who has supported me throughout this incredible experience. I appreciate the love from home more than my Kennesaw family knows."

Jessica Richens: "Thank you all, from the bottom of my heart, for believing in me every step of the way and always being part of my support system. You guys have helped give me the strength I needed to overcome so many obstacles. Most importantly, thank you for accepting and embracing me for who I truly am. I am so grateful for each and every one of you."

Valerie Rockey: "This journey has been a dream-come-true and there's no way that I could have experienced it without the help of all of my sweet, supportive fans. Thank you everyone so, so much,for letting me learn and grow on the show and for seeing something special in me. I'm so very thankful for every single one of you!"

Ricky Ubeda: "If I could say anything to the people who have supported me throughout this experience, it would be: thank you. I am so very grateful to have had the chance to inspire you. Your love has warmed my heart through this entire journey."

So You Think You Can Dance was created by Simon Fuller and Nigel Lythgoe and is from 19 Entertainment, a division of CORE Media Group, and dick clark productions. The series is executive-produced by Fuller; Lythgoe; Allen Shapiro, CEO of dick clark productions; Barry Adelman, Executive Vice President of dick clark productions; James Breen; and Jeff Thacker. Visit the official So You Think You Can Dance site at www.fox.com/dance to view exclusive videos and photos. "Like" So You Think You Can Dance on Facebook at facebook.com/SoYouThinkYouCanDance. Follow the series on Twitter @DANCEonFOX and join the discussion using #sytycd. Follow host Cat Deeley at @catdeeley, and follow the judges Nigel Lythgoe @dizzyfeet and Mary Murphy@hottamaletrain. Through the FOX NOW app, FOX viewers can watch full episodes of their favorite FOX shows on a variety of digital platforms, while enjoying enhanced interactive and social capabilities around those shows. Download the FOX NOW app atwww.fox.com/foxnow.

Photo: Adam Rose/FOX