A yin-yang approach to philanthropy has shaped the Ballmer Group. But the husband-and-wife founders have remained focused on one goal: to improve economic mobility in the U.S.

Stamkos scored a power-play goal and went minus-2 in Tuesday's 3-2 win over the Sharks. Stamkos put the Predators up 2-0 in the second period, but he was also on the ice for both of the Sharks' goals ...