
Ecuador handed him a debut off the bench against the Netherlands on 17 May 2014, when he was eighteen, and took him to the World Cup in Brazil a month later. He went to two World Cups, 2014 and 2022, passed 60 caps holding the space in front of the back four, took the Ecuadorian title with Barcelona SC in 2012, and added the Supporters' Shield and the US Open Cup with FC Dallas in 2016. Career record: club career at Independiente del Valle, Barcelona S.C., VfB Stuttgart.
| 2011–2011 | Independiente del Valle |
| 2012–2014 | Barcelona S.C. |
| 2014–2016 | VfB Stuttgart |
| 2016–2019 | FC Dallas |
| 2019–today | FC Augsburg |
| — | Santos Laguna |
Ecuador legends whose careers overlapped Gruezo's
One rank above: Miller Bolaños at #25.
One rank below: Frickson Erazo at #27.
Ecuador's editorial top five: Alberto Spencer · Antonio Valencia · Willian Pacho · Álex Aguinaga · Enner Valencia.