Former champion Lleyton Hewitt has lost to German qualifier Dustin Brown in the second round of Wimbledon.

Hewitt, who upset 11th-seeded Stanislas Wawrinka in the first round, was overwhelmed by Brown's aggressive strokes and lost 6-4, 6-4, 6-7 (3), 6-2.

The 189th-ranked Brown achieved his best Grand Slam performance by reaching the third round. The dread-locked player had never won a match at Wimbledon before this year.