First, we create one TreeViewer that can display NBA or MLB players according to your choice.

首先，创建一个可以根据选择显示NBA或MLB球员的TreeViewer。

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Some MLB players are using pink bats today as part of the breast cancer awareness campaign on Mother's Day.

在母亲节这一天，一些美国职业联盟的选手通过使用这种球棒来参与乳癌防治的宣传。

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The arbitration panel apparently agreed, voting 2-1 to overturn the suspension, according to the MLB Players Association.

CNN: Ryan Braun's sample collector defends test process

Other than the United States, the Dominican Republic has supplied the greatest number of MLB players in history.

FORBES: The Secrets Behind The Dominican Republic's Success In The World Baseball Classic And MLB

Michael Weiner, executive director of the MLB Players Association, said he doesn't believe any collusive behavior is taking place.

WSJ: Baseball Free Agency Dies of Neglect -- Matt Cain, Joey Votto, Andrew McCutchen, Matt Kemp Opt for Long-Term Deals