The popular Brazilian impressed the website's readers enough to edge out Paul Scholes as the September's star man. In doing so, the right-back became only the third defender to win the award since its 2007 inception.
"I’m very happy to win this award, especially since I found out that defenders never win it," Rafael laughed. "It’s just an honour to win, especially to beat Paul Scholes, and I’m very proud.
"It was a good month for me, very consistent, playing many games and of course scoring the goal at Liverpool was the high point for me. I think scoring at Anfield probably helped a lot with the voting!"
Furthermore, that stunning strike on Merseyside is very much in the running for our Goal of the Month accolade and the South American went close to netting for a third time this term with a thumping drive that flew inches wide at Newcastle on Sunday.
Now 22 and approaching a century of appearances for the club, Rafael revels in the relationship he has built with United supporters since arriving from Fluminense.
"It’s great to win something voted by the fans," he continued. "The supporters have helped me since I came here and I’m very happy with that.
"Since I arrived here, the fans have been amazing, singing songs for me or stopping me and telling me I’m a true Red! I’ve been coming here to training since I was 15 years old, a long time, so I feel like I am a true Red."