The Los Angeles Dodgers were easily the most active buyers leading up to today’s 4 p.m. ET, MLB non-waiver trade deadline. 

They pulled off a stunning trade last week when they acquired former All-Star Hanley Ramirez and left-handed reliever Randy Choate from the Miami Marlins for 22-year-old pitcher Nate Eovaldi and lightly regarded relief pitching prospect Scott McGough.  

That move was augmented by yesterday’s trade to acquire relief pitcher Brandon League from the Seattle Mariners, which then allowed the Dodgers to flip relief pitcher Josh Lindblom and prospect Ethan Martin to the Philadelphia Phillies for outfielder Shane Victorino. 

Each of those moves dramatically improved the Dodgers’ postseason odds and sent a strong message to the rest of Major League Baseball that the new ownership group in Los Angeles is serious about winning now.

But as savvy as each of those trades were—especially since the Dodgers surrendered none of their top prospects to make the moves happen—there was a glaring hole in the strategy executed by Los Angeles general manager Ned Colletti: he failed to upgrade the starting rotation. 

There’s no question that the Dodgers’ inability to consistently score runs was the biggest issue preventing them from being a legitimate threat to contend for a World Series in 2012 and beyond. But there are four reasons why not upgrading the starting pitching could cost Los Angeles dearly.

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