The Worst Extensions From Two Offseasons Ago

More than $1.1 billion across 117 contract years was committed to 32 players with less than six years of Major League service time during the 2010-11 offseason extension period, spanning October 2010 through April 2011.  Ryan Braun, Adrian Gonzalez, and Troy Tulowitzki each signed extensions worth more than $100MM.  Two years removed from this extension period, which contracts now appear the most regrettable?

• Dan Uggla has provided some value over the past two seasons, hitting 36 home runs in 2011 and drawing a good amount of walks last year.  Still, at .223/.326/.416 since the contract was signed, the Braves' second baseman has fallen short of the level of production that compelled the team to commit five years and $62MM.
• Chad Billingsley's three-year, $35MM extension didn't look bad when it was signed in March 2011, but it covers 2012-14 and Tommy John surgery will take a big bite out of the righty's innings for the Dodgers.
• The Marlins' Ricky Nolasco has a career FIP of 3.83 against an ERA of 4.47, so he is probably overvalued by a FIP-based method.  Nolasco is finishing out a three-year, $26.5MM extension, and the Marlins are expected to have to eat money or take back salary in order to move him.
• Cubs reliever Carlos Marmol signed a three-year, $20MM extension.  Former Cubs GM Jim Hendry guaranteed Marmol's final two arbitration years and also bought a year of free agency for $9.8MM.  Perhaps Marmol was an unhittable strikeout machine in 2010, but he'd also shown a penchant for walking six or seven batters per nine innings.  Once Marmol became just a bit more hittable, the wheels fell off.  
• With the player coming off a .254/.324/.350 season, was it really necessary to buy out one of Jason Bartlett's free agent years?  Former Padres GM Jed Hoyer did so at a cost of $5.5MM for 2012, only to release the shortstop in August of that year.