31.   A free-for-all ensued, and Tre Johnson was singled out because he kept flailing his arms and struck the line judge after the other players had settled down.

32.   A line judge overruled herself, leading to a replay when van Lottum would have won the point.

33.   A line judge called the ball out, but Pierce said it was good and moved on to the next point.

34.   After having a few words with the umpire, he stared down a line judge for several seconds.

35.   Agassi double-faulted to lose the fifth game of the final set, but not before he shouted at a line judge after a controversial call.

36.   At match point, he again sent the ball out, and lost control of his racquet, which struck a line judge in the head.

37.   At match point, what appeared to be a service winner for Ivanisevic was annulled when the line judge called a foot fault.

38.   At one stage, he was involved in a face-to-face confrontation with a line judge.

39.   But umpire Jane Harvey incorrectly overruled the line judge and gave the point to Sanchez Vicario.

40.   Carlos Costa lost control of a racquet as he was about to lose his match at the Croatian Open on Thursday, striking a line judge in the head.