5 instances of tennis players getting disqualified 

#4 David Nalbandian - 2012

AEGON Championships - Day Seven

While facing Marin Cilic in the final of the Queen's Club tournament back in 2012, David Nalbandian lost his cool after getting broken in the second set.

As soon as he got broken, he went and kicked an advertising board on the sidelines, which ended up hurting the linesman quite badly. He suffered a cut on the leg.

Despite being a set up, Nalbandian was then disqualified from the match, thus handing Cilic the title.

#3 Anastasia Rodionova - 2007

ASB Classic - Day 1

While facing German Angelique Kerber back in 2007, Russia's Anastasia Rodionova became only the second person in the history of the WTA to be disqualified.

Kerber was given a default victory in the third set when Rodionova directed three balls into a group of Kerber's supporters.

Kerber was leading 4-6 6-4 1-0 at that point. Rodionova, however, denied that she was aiming at the crowd.