Ranking the top-30 players in Major League Baseball today
By Danny Vietti

Apr 9, 2015; San Diego, CA, USA; San Francisco Giants catcher Buster Posey (28) steps into the batters box during the first inning against the San Diego Padres at Petco Park. Mandatory Credit: Jake Roth-USA TODAY Sports
#4. Buster Posey–San Francisco Giants C
Next: #3. Clayton Kershaw