At it's core, adding players to a team's roster in the offseason is nothing more than high-stakes gambling.
Every general manager in the game is hoping to hit the jackpot with each of the additions that they make to a team's 25-man roster, but ultimately, whether a player will succeed in new surroundings is largely a crapshoot.
Nobody would argue that Josh Hamilton isn't one of the most naturally gifted baseball players that we've seen in a decade—yet he's struggled to get going with the Los Angeles Angels.
At the same time, a pitcher like Chad Gaudin wasn't even a blip on the free agent radar this past offseason—yet he's been one of the best relievers in baseball so far in 2013.
You just don't know how it's all going to play out, and sure, early-season success—or failure—isn't necessarily a foretelling of things to come over the rest of the regular season.
But the games count, and as we've seen far too often, early season struggles have a way of costing teams dearly late in the season when it comes to the race for the playoffs.
Lets take a look at the newcomers to each team who have, so far, repaid their respective GM's faith with big-time performances for their new clubs.
*Players who re-signed with their 2012 teams were not eligible for consideration.