 During his nine years at Chelsea and throughout his career, he scouted and discover players like Humberto Suazo at age 13; twin brothers Rogelio and Ramiro Funes Mori at ages 16; Christian Pulisic at age 13; Neymar at age 14; Javier Pastore at age 16; James Rodríguez at age 16; Lucas Moura at age 14; Arturo Vidal at age 17; Alexis Sánchez at age 16; Eduardo Vargas at age 16; Lucas Ocampos at age 15; Erik Lamela at age 16; Gonzalo Higuaín at age 18; and Abu Danladi at age 17, Alphonso Davies at age 15 among others.On 11 January 2008, though still hired at Chelsea, Alvial joined the FC Dallas coaching staff for a short period of time to evaluate players at the Major League Soccer (MLS) level.Alvial, however, returned to Chelsea to continue his position as chief scout for the Americas the same year.