Audrey Case and George Lawrence II were both sent home by judges on a special All-Stars edition of the show.
After an opening group dance based on movie-musicals in honour of the 100th anniversary of Gene Kelly's birth, dancers teamed up with past So You Think You Can Dance contestants for special duet performances.
Judges Nigel Lythgoe, Mary Murphy, and guest judge Benjamin Millepied saved Witney Carson and Chehon Wespi-Tschopp from elimination after the bottom four gave solo performances.
The two dancers who were saved will join Cole Horibe, Tiffany Maher, Will Thomas, Cyrus 'Glitch' Spencer, Lindsay Arnold and Eliana Girard on next week's show.
[Eliminated dancers Audrey Case [L] and George Lawrence [R]]
That left Case and Lawrence, who performed with All-Stars Twitch Boss and Allison Holker respectively, as the eliminated contestants for the night.
So You Think You Can Dance airs on Wednesdays at 8/7c on Fox.