Lionel Messi says he's still haunted by Barcelona's semi-final Champions League defeat to Liverpool.
In what was his first news conference in four years, the Argentinean said the loss was among the "worst moments of his career".
The Reds overturned a 3-0 first-leg deficit to win the second leg 4-0 at Anfield and progress to the finals of the Champions League.
Barcelona take on Valencia on Saturday for a chance to win the Copa del Rey.
Messi says winning the trophy will be the best was to ease the pain of the Champions League defeat.

Iran will be at World Cup and will play in the US, says FIFA boss
Abu Dhabi advises fans to arrive early for Al Ain, Al Wahda match
Sangakkara, Mahanama named in interim committee to run Sri Lanka Cricket
Focused Fils making a statement ahead of French Open
Atletico hit back to hold Arsenal in cagey Champions League semi-final first leg
