Lionel Messi, left, and Neymar celebrate after Barcelona defeated Paris Saint-Germain 6-1 at the Camp Nou to advance to the Uefa Champions League quarter-finals. Quique Garcia / EPA
Lionel Messi, left, and Neymar celebrate after Barcelona defeated Paris Saint-Germain 6-1 at the Camp Nou to advance to the Uefa Champions League quarter-finals. Quique Garcia / EPA

Neymar produces career-defining performance as Barcelona complete greatest European comeback