Which player was nicknamed "Mr. National"?

What uniform number did Stephen Strasburg wear with the Nationals? What position did Ryan Zimmerman primarily play? Ryan Zimmerman is best known for playing with which MLB team? What uniform number did Ryan Zimmerman wear with the Nationals? Which player was nicknamed "Shotime"? What position did Hideki Matsui primarily play? Hideki Matsui is best known for playing with which MLB team? What uniform number did Hideki Matsui wear with the Yankees?