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. In a recent interview on XFOX 14, Sin Cara discussed his WWE career: “I had a dream of becoming a professional wrestler; that’s all I wanted to do since I was a little kid … You never think about those things, you know, when you’re young.
You’re just thinking about making it, but now that I’m in this position, I think it’s very important for me as a professional athlete, as a professional wrestler, to do things right. To do the things the best way that I can, because no matter what we’re still in the eye of everybody. I want them to feel proud of Sin Cara they know from El Paso and if I can make it, they can make it”.