It takes a lot to surprise us these days.
With the wealth of information available to us, from traditional statistics to advanced metrics and video clips that are slowed down, dissected and put back together, it's become harder than ever for a player to come along and do something that nobody saw coming.
Take Chicago's Jose Abreu, for instance. While nobody expected Abreu to put together a historic first month in the major leagues, there was little doubt coming out of spring training that the Cuban defector was going to be a force in the middle of the White Sox lineup.
It'd be easy to include a rookie on a list of white-hot starts that we never saw coming, if for no other reason than that they don't have a track record of success at the major league level to point to—but you won't find one first-year player on the pages that follow.
From youngsters still trying to find their way in The Show to established veterans that we thought were past their primes, there has been no shortage of individual eye-opening performances just over a month into the 2014 season.
Here's a look at 15 of the most surprising.