Initial reports of the new contract came from a story on the official MLS website about Saborio as one of MLS's most underrated players.
Saborio's new deal will run through 2015, and he remains a designated player. Until last week, there were only two years remaining on his deal. There is a club option at the end of every year.
Despite enduring unjust fan criticism in the early months of 2012 — most of it inaccurate at best — Saborio has become an essential part of Real Salt Lake since joining in 2010. He scored 18 goals across all competitions that year.
Saborio, who has scored three goals in three matches for the club in 2013, became Real Salt Lake's leading goalscorer last year; his 43 goals are neared only by New York Red Bulls striker Fabian Espindola, who departed the club during the offseason.
Espindola had 35 goals for the club in six years. Robbie Findley, who rejoined the club at the beginning of the season, has scored 30 for RSL, including one this season.
Saborio could play against Colorado Rapids on Saturday after recovering from knee swelling, which kept him out of the last match; he missed the match before through international duty.