Dan Cox, the 5ft 6in youngster from Lincoln, justified his Wimbledon qualifying wild card with a 6-3, 1-6, 8-6 win over Ireland's Conor Niland, who is six inches taller and 360 places higher in the rankings.
"Size isn't everything. Because I'm much closer to the ground I feel I can move better than everyone else," said Cox after pulling off the biggest win of his career.
"If I serve big, volley well and hang in there like I did today there's no reason why I can't go further," said the 18 year old Brit. Dan Cox is now two wins away from the Wimbledon main draw after emerging from last week's Wimbledon pre-qualifying event.
This year Wimbledon is being streamed live online for free, you can watch the free live streams with Bet365's streaming service.
Fellow Briton Alex Slabinsky, 23, also reached the second round, beating Romania's Adrian Cruciat 6-4, 6-4.
However the Wimbledon qualifyiers weren't as kind to Chris Eaton, who reached last year's Wimbledon second round, when he failed to qualify against Frenchman Stephane Robert.
