In the days leading up to the trade deadline this season, just two National League teams acquired players in trades, as the Padres acquired struggling starter Ian Kennedy from the Diamondbacks and the Dodgers picked up backup catcher Drew Butera from the Twins.
In other words, 10 of 15 NL teams made no moves at all at the deadline, and the most significant player moved in the NL outside of the Cubs' fire sale was a 28-year-old starting pitcher with a 5.23 ERA.
This is likely because there isn't much of a playoff race in the NL this season. The Pirates, Braves, Dodgers, Cardinals and Reds currently hold the five playoff spots and only one team, Arizona, is within five games of any of them, so teams were unwilling to give up valuable prospects to either chase a playoff spot that was likely a long shot or further secure their already secure place in the postseason.
Also, there are a half-dozen NL teams between five and ten games out of the second wild card spot, and all of them, including the Rockies, felt little need for a major sell-off and rebuild.
The Rockies are actually a prime example of this mindset, roughly a half-dozen games out of a playoff spot, they felt no need to swing for the fences in 2013 but feel they have a core including Troy Tulowitzki, Carlos Gonzalez, Dexter Fowler, Wilin Rosario, Nolan Arenado, Jhoulys Chacin, Tyler Chatwood and Rex Brothers to build around that can bring them success in the near future. While the club's decision to hold onto Michael Cuddyer is debatable, they really weren't in position to make a significant move.
The addition of the second wild card will only encourage teams league-wide to approach the deadline with the mentality the Rockies did in 2013, perhaps pushing the deadline back to mid-August would encourage movement as there would be more solid buyers and sellers, but that would likely drive down the cost of rentals such as Matt Garza, dis-incentivizing teams to make moves for them. As it stands now, the Rockies lack of moves at the deadline was simply the team being a product of it's environment.
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