Trevor Noah's backing up Taylor Swift ... saying the Grammys wouldn't focus lenses on her like the NFL -- they'd go after a former player.
The comedian just took to the Grammys stage to perform his opening monologue -- during which he stayed real positive and complimentary -- before mentioning the world's biggest pop star and chastising NFL fans for blaming Taylor for the amount football broadcasts cut to her.
Noah said she doesn't control the cameras, so people need to chill out .