Diligently comparing Martina's notes on Radek
...and exchanging towels. No, the sportswear company (Tonic) that Martina is involved with are the tournament supplier.
Petra nearly always looks far better in her training gear than the stuff Nike provides for matches. What they gave her to wear during the hardcourt season last summer really didn't help perceptions of her fitness (or lack thereof). Hope they don't repeat that mistake after finally giving her something nice at Wimbledon.