She was pushed hard, oh so hard by Sara Errani yesterday in the final of the French open, but Maria Sharapova finally overcame her plucky opponent to complete her set of Grand Slam titles, a feat that only 10 women in history have achieved. In her speech afterwards, I sensed a real maturity in her response to her victory. The victory came after her career was nearly wrecked by a debilitating shoulder injury, and I would guess all the sweeter for overcoming it.