Attitude, demeanor of tennis stars changing for the better

Serena Williams and other top tennis stars are making more of an effort to sign autographs and fulfill "extra" duties.

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We'll see how long this era last. An individual sport -- without teammates to offend and coaches to enrage -- all but begs for lapses in decorum. But, for now anyway, it's hard to imagine another competitive industry -- much less another sport -- with such a collectively decent workforce. Enjoy this time, a golden era for the absence of personalities.