The Curious Case of Cardenas

The Cubs claimed infielder Adrian Cardenas off waivers today from the Oakland A's, where he was outrighted to make room for Johnny Gomes. To make room on the 40-man, the Cubs DFA'd Blake DeWitt. Before we get to Cardenas, if I'm reading this correctly, the Cubs most likely cost themselves up to $1.1M? I believe they're on the hook for DeWitt's salary, when they could have just non-tendered him back in December, but of course they didn't know Cardenas was available back then. If DeWitt signs with another team, I believe the Cubs are just on the hook for the dfference in salary, which will likely be the mininum, so a little over $600K. Now a team may also put a claim in or work out a trade and the Cubs will be completely off the hook, but those scenarios seem less likely. Not a big deal overall, as the Cubs have plenty of wiggle room to their payroll, but an odd move nonetheless. Now was it worth it for Cardenas? The infielder was a supplemental first round pic...