FC Dallas announced the signing of the Ecuadoran defensive midfield on January 21, 2016.
2016: Gruezo made his MLS debut on March 6 against Philadelphia… Started in 26 regular season games, three US Open Cup games and two CONCACAF Champions League games… Had two assists... Scored one goal in the 27th minute against and had an assist in the 90th minute against Suchitepéquez, which pushed Dallas through to the quarterfinal round of the 2016-17 CONCACAF Champions League tournament... FC Dallas finished the regular season with a 15-3-7 record in matched he started… He finished the season with 2,240 minutes played.
Gruezo, 20, joined Bundesliga side VfB Stuttgart after signing a four-year contract with the club in January 2014…Four months later Gruezo made his debut for Ecuador’s senior national team as a second-half substitute versus the Netherlands on May 17…A few weeks later, he was named to Ecuador’s 2014 FIFA World Cup squad…In the fall of 2014, Gruezo scored his first goal for Stuttgart in a 4-1 victory over Freiburg, becoming the first Ecuadorian player to score in the Bundesliga…Overall he has made 18 appearances for Stuttgart and 10 for the Ecuador Men’s National Team since 2014…Represented Ecuador’s national team multiple times in 2016… Started in four Copa America games with the national team and recorded 331 minutes played... Started in one international friendly for the national team… Played in two CONMEBOL World Cup Qualifying games.