Michu, 30, who had stopped playing because of the pain caused by ankle problems, joined Oviedo on a one-year contract last month.
Relive all the best moments of extra time, as Barcelona take over en route to winning the Copa del Rey.
Sevilla coach Unai Emery said a "lack of freshness" had cost his side after they came so close to beating Barcelona in Sunday's Copa del Rey final.
Barcelona faced a handful of dilemmas in Sunday's Copa del Rey final. Luis Enrique's handling of those situations earned the Catalans some silverware.
Barcelona coach Luis Enrique hailed the character of his "team of champions" after they completed the Spanish domestic double by outlasting Sevilla.
ESPN FC's Paul Mariner discusses whether or not Barcelona's domestic double makes up for their disappointing UCL campaign.