Regression is something that happens every year in baseball. In 2013, there will be some teams that regress that aren't surprising, while there are others that will shock fans.
Not many did.
The Orioles had the 21st-ranked ERA for starters (4.42), but still managed to squeeze out 93 wins, due in large part to a dominant bullpen.
The Athletics had one of the lowest payrolls in baseball, but still managed to find ways to win games.
This year, both teams will regress, as it's impossible to think they can repeat.
The main reason is neither has added much to their team this year.
Baltimore has failed to add a starting pitcher, which they desperately needed after sending 12 different starters to the hill last year. Add in the loss of Mark Reynolds and the questionable trading of Robert Andino and you have a conundrum on your hands.
Oakland hasn't done much either, although their pitching will remain strong.
However, there are five outfielders looking for playing time and no real solid players on the infield. In the end, that will come back to bite the A's.
So, who else is likely to regress in 2013?
The Rangers are one of the more obvious choices for this list.
For starters, Texas has lost Mike Napoli, Michael Young and Josh Hamilton from their lineup. Young will be replaced by Jurickson Profar, while Napoli will be replaced by A.J. Pierzynski.
Hamilton will be replaced by...can you really replace 43 home runs and 128 RBI without making a significant free-agent signing?
The Rangers have no Billy Beane in-house and have some serious issues when it comes to the middle of their order.
While the pitching will still be good with Yu Darvish and Matt Harrison at the top, the Rangers haven't put a team on the field that will contend for the division title in 2013.
New York Yankees
A-Rod, Derek Jeter, Hiroki Kuroda, Mariano Rivera and Ichiro Suzuki are all 36. While each still has some game left in them, can they really be expected to carry the team in 2013?
Add in the fact that Nick Swisher and Rafael Soriano are gone, and you have some solid pieces missing on the team.
The only real move New York has made was to sign Kevin Youkilis, but how far will that really get them?
There are no teams from the National League that are really expected to regress.
The Atlanta Braves and Washington Nationals will be strong once again. The St. Louis Cardinals and the Cincinnati Reds will battle in out in the NL Central, while the Los Angeles Dodgers and San Francisco Giants will compete out west.
Those were the top six teams last season and will be the top six teams once again.