LONDON (Reuters) - Until Monday, Wimbledon's 11th seed Taylor Fritz was not even the best tennis player in his own family.

But with some hefty swipes of a garish coral-coloured racket on Court One, the American finally earned his family stripes by reaching the quarter-finals of the grasscourt grand slam.

His 6-3 6-1 6-4 win over qualifier Jason Kubler put him into the last eight here, and saw him match the grand slam feat of his mother who, as Kathy May, reached three slam quarter-finals in the late 1970s.