Russia's [ Images ] Igor Andreev powered to a 7-5, 6-2 win over home favourite and third seed Rafael Nadal [ Images ] in the Valencia Open quarter-finals in Valencia on Friday.

The number seven seed ended Nadal's impressive run of form to book a semi-final against qualifier Ivan Navarro Pastor of Spain at the 340,000 euro ($435,800) claycourt tournament.

Navarro Pastor fought back from a set down to knock out second seed Fernando Gonzalez [ Images ] of Chile 6-7, 6-4, 6-4 in a fiercely disputed quarter-final earlier on Friday.

The other quarter-finals were postponed until Saturday because of rain.

Spain's Alberto Martin [ Images ], who dealt a humbling 6-2, 6-0 defeat to Brazil's [ Images ] Gustavo Kuerten in the last round, will meet fellow countryman David Ferrer and former French Open [ Images ] champion Albert Costa will face last year's winner Fernando Verdasco [ Images ].