By Courtney Nguyen
June 13, 2014

Maria Sharapova rides the tube, Roger Federer hangs out with a few thousand of his best friends and World Cup fever is taking over the tour. Here are some of the best tweets of the week.

Brown (who beat Rafael Nadal in his previous match) lost the decisive final set tiebreak 18-16 to Philipp Kohlschreiber in the Halle quarterfinals.

A disappointed Marin Cilic after Brazil beat Croatia thanks to a controversial officiating call.

Yevgeny Kafelnikov takes a crack at the home-cooked officiating that favored Brazil in its opening win over Croatia.

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