As a result of the 2017 WWE Superstar Shake-up, Sin Cara was moved to the SmackDown brand. Afterwards, Sin Cara rarely appeared on television, mainly wrestling at live events. On the October 17 episode of SmackDown, Sin Cara started a feud with the United States Champion Baron Corbin, but on November 6, Sin Cara revealed on Twitter that he suffered a legitimate leg injury during the European tour against Baron Corbin.
However, the injury was not severe and he was cleared to compete shortly afterwards. On the edition of November 14 of SmackDown, Sin Cara failed to win the United States title after being defeated by Corbin. At WrestleMania 34 on April 8, 2018, Sin Cara competed in the André the Giant Memorial Battle Royal, but failed to win.
On the May 29 episode of SmackDown Live, Sin Cara tried to reconnect with Andrade Cien Almas only to be blown off. At Extreme Rules on July 15, Sin Cara lost to Almas. On August 15 it was reported that Cara underwent knee surgery.
In March 2019, he was cleared to return to in-ring action. At Super ShowDown in June, Sin Cara competed in the 51-man battle royal, but failed to win. Speaking on XFOX 14, Sin Cara revealed the best moment of his career: “Yeah, WrestleMania 32 for me, you know?.
Cowboy Stadium, 101,000 people, you know, the biggest crowd in the history of wrestling. The crazy thing about that [is] when the match happened and I ended up on the floor, I started crying. Not because of pain, but because of the emotion that I’ve gone through, when I was a little kid and then trying to realize my dream. And then when that moment finally got realized, it hit me that day. The excitement, of joy, of happiness”.