The terrorist's killing spree in Norway and the untimely death of singer/tragedienne Amy Winehouse at age 27 sparked responses from ATP and WTA players alike via Twitter over the weekend. A sampling here of the players' reactions, in their own words:

On Norway:  
"Can't believe what's happened in norway, absolutely tragic, what is that meant to achieve, gets me so down:-("  
-Andy Murray  
"What is wrong with some people in this world? So tragic, so sad. Thoughts are with the people in Norway."  
-Anne Keothavong  
"Just read a detailed report on the #Oslo bombing/shooting. It amazes me that some people can have that much hatred in them. Scary world."  
-Amer Delic  
On Amy Winehouse:  
"Wow. Rest in peace Amy Winehouse. Very sad news. Such an amazingly talented lady."  
-Laura Robson

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"Just heard the news about Amy Winehouse...sad,but not sure why im not surprised..."

-Sorana Cirstea

—Jonathan Scott (@jonscott9)