Lionel Messi double strike helps Barcelona rout Chelsea in Champions League round of 16

Chelsea coach Antonio Conte, left, and Barcelona coach Ernesto Valverde, right, gesture during the Champions League round of sixteen second leg soccer match. | AP

Chelsea's Olivier Giroud, center bottom, and Chelsea's Antonio Ruediger shoot on goal during the Champions League round of sixteen second leg soccer match. | AP

Chelsea head coach Antonio Conte sits on the bench during the Champions League round of sixteen second leg soccer match against FC Barcelona. | AP

Chelsea's N'golo Kante, right, vies for the ball during the Champions League round of sixteen second leg soccer match against FC Barcelona. | AP

Barcelona's Andres Iniesta, bottom, and Chelsea's Victor Moses vie for the ball during the Champions League round of sixteen second leg soccer match. | AP

Chelsea's Marcos Alonso, left, covers his face as Barcelona players celebrate scoring their side's second goal during the Champions League round of sixteen second leg soccer match. | AP

Barcelona's Lionel Messi, left, vies for the ball with Chelsea's N'golo Kante during the Champions League round of sixteen second leg soccer match. | AP

Barcelona's Luis Suarez shoots on goal as Chelsea's Cesar Azpilicueta, left, tries to block the shot during the Champions League round of sixteen second leg soccer match. | AP

Chelsea's Marcos Alonso kicks the ball in front of Barcelona's Andres Iniesta, right, during the Champions League round of sixteen second leg soccer match. | AP

Chelsea's Olivier Giroud heads the ball as he jumps with Barcelona's Sergio Busquets during the Champions League round of sixteen second leg soccer match. | AP

Barcelona's Ousmane Dembele,center, back to camera, celebrates after scoring his side's second goal during the Champions League round of sixteen second leg soccer match against Chelsea. | AP

Barcelona coach Ernesto Valverde sits on the bench during the Champions League round of sixteen second leg soccer match against Chelsea. | AP

Barcelona's Gerard Pique goes for the ball during the Champions League round of sixteen second leg soccer match against Chelsea. | AP

Barcelona's Ousmane Dembele, left, celebrates with Jordi Alba and Lionel Messi, right, after scoring his side's second goal during the Champions League round of sixteen second leg soccer match against Chelsea. | AP