A second straight lousy tiebreak has put No. 5 Andy Roddick on the brink of elimination in the fourth round against unseeded Lu Yen-Hsun.
Roddick won the first set 6-4, with the only break match but has dropped the last two in tiebreaks to put himself in a big hole on Court 2.
Lu has a couple big wins to his name in his career, including beating Andy Murray in the first round of the Beijing Olympics in 2008. But this would be by far his biggest career move at a grand slam.