Tied at one set apiece in the Wimbledon semifinals, big-serving Jerzy Janowicz looked pretty much in control against Andy Murray after landing an ace to take a 4-1 lead in the third set.
The first Polish men's player to reach a Grand Slam semifinal was annoying the second-seeded Briton with a combination of powerful ground strokes, slices and drop shots.
But all of a sudden it went wrong.
The 22-year-old Janowicz, who was bidding to become the youngest man to reach the final at the All England Club since Rafael Nadal five years ago, lost five consecutive games. Soon after, he lost the match 6-7 (2), 6-4, 6-4, 6-3.