José Guillermo del Solar Alvarez-Calderón (born 28 November 1967) is a Peruvian retired footballer who played as a defensive midfielder, and the manager of Club Deportivo Universidad César Vallejo. During his playing career, spent in four countries – mainly in Spain, where he amassed La Liga totals of 149 matches and ten goals during six seasons – he was nicknamed Chemo. He started and finished it at Universitario. Del Solar as a Peruvian international for 15 years. He started working as a manager in 2005, also being in charge of the national team late into the decade.