You're probably wondering where Yahoo! got "Edmundo" from Nick. Franklin's middle name is Edward, so that's, like, almost there. Searching for Edmundo Franklin on Baseball Reference brings you a big old batch of no results. Googling "Edmundo Franklin" does bring you to Franklin Edmundo Rijkaard's Wikipedia page, though, so maybe someone at Yahoo! is just a huge Dutch football fan.
If you're a fantasy player, now would be the time to put in a bid for Franklin, in the hopes no one else in your league can figure out that using his real name won't get you there.