Tweets of the Week: Aga + Martina reaction, Wozniacki, Monfils play piano

After much ballyhoo and speculation about who would serve as her new "supercoach," Agnieszka Radwanska giddily announced that legend Martina Navratilova will soon join her team.

The responses were nearly immediate, and passionate:

Meanwhile, this was a lot of serve-and-volley brilliance to have contained on one plane. Pete Sampras, everybody.

And Roger Federer's intense shootout against Novak Djokovic in International Premier Tennis League (IPTL) play catalyzed this sterling post:

Ana Ivanovic, Gael Monfils, and their IPTL teammates revealed, whether they liked it or not, a new way to warm up for matches:

And for once, Monfils proved to be the less volatile and dramatic of two players pictured:

At the end of the day, no one north of the Sunshine State is crying for Serena Williams over this:

This one may take the cake, though: Who knew that Gael Monfils and Caroline Wozniacki had such skills beyond shotmaking? Witness them grandly tickling the ivories of a piano here:

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