VIDEO: Marquinhos protects PSG's lead with great diving block to deny Jordi Alba

Down 3-2 in the second half to Paris Saint-Germain, Barcelona pressed hard for the equalizer but ultimately came up short.

Jordi Alba looked set to score until PSG defender Marquinhos came out of nowhere to send Alba's shot into the crowd.

The block proved critical as PSG held on for the victory and now sit atop Group F with four points after two matches.