NADAL, FED, MURRY WIN IN QATAR

Top three seeds Rafael Nadal, Roger Federer and Andy Murray continued their serene progress at the Qatar Open on Wednesday, reaching the quarter-finals with straight-sets victories.

World number one Nadal outplayed Slovakia's Karol Beck 6-1 6-2, Federer beat Italy's Andreas Seppi 6-3 6-3 and Murray knocked out Germany's Philipp Petzschner 6-2 6-4.

Fourth seed Andy Roddick also made it safely through, with a slightly less convincing 6-3 7-5 victory over French wild card Arnaud Clement.

Nadal took just over an hour to see off qualifier Beck, reeling off six straight games after falling behind 0-2 in the second.