How many times does Jerzy Janowicz have to disagree with a line judge before he loses his mind?
Well, he answered that question emphatically on Wednesday in the second round of the 2013 Australian Open.
Serving for the first set, the 22-year-old pro went ballistic when Somdev Devvarman's return was called "in" by the line judge, knotting the tiebreaker up at nine points apiece.
During his crusade, Janowicz asked the line judge "how many times" this had to happen and declared that it simply wasn't "fun to play like this." He also switched languages midway through just to make it all the more erratic.
The crowd's reaction was just as entertaining, which went from disapproving groaning to maniacal clapping throughout Janowicz's tirade.
Janowicz, the No. 24 seed in the tournament and the No. 26 player in the world, proceeded to lose the tiebreaker and the second set before battling back to win the last three sets and the match, 6-7, 3-6, 6-1, 6-0, 7-5.
Some young players need to learn composure. Some never do. Judging by Janowicz's recent outburst, I'm guessing he's more the John McEnroe-type.
The Polish youngster isn't the only tennis player to ever go bonkers over a call, but his reaction on Wednesday should make his visit to Melbourne a memorable one for many people...for all the wrong reasons.