Major League Baseball is a mercurial sport. And by that I mean the fortunes of an MLB player can turn on a dime.

Some players—who were of almost no use—will suddenly come alive and carry their team to several victories. Conversely, players who were performing at a high level can go through stretches where it seems each ball they hit hard goes right to someone. 

Take Boston’s David Ortiz, for example. From May 6 to May 14, he had a .552/.606/1.172 slash line with five home runs and eight RBI and was the hottest hitter in MLB. Since then, he is hitting a woeful .115 and has a .348 OPS.

Just like that, Ortiz has gone from hero to hindrance.

So which players have stepped it up over the past seven days? For the sake of brevity, things are going to be straightforward here. One pitcher and one player from each position, including designated hitter, will represent MLB as a whole.

To be sure, this isn’t science. And for every player presented, there will be an argument for another. But isn’t that what makes MLB so much fun to follow?

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