Hard courts reward power, clay rewards patience.  The best players master both. As the tour leaves the sun and fun of the US hard courts, our attention turns to the grind of the clay.  Hard courts reward first-strike tennis: big serves and big forehands.  Clay courts reward point construction, spin, and stamina.  Points are longer, margins are smaller, and fitness and patience become weapons.  Clay courts don't just test your game; they expose your flaws. The tour's first sto