One of the biggest question marks of the Red Sox' offseason is the future of J.D. Martinez. Will he or won't he opt out of his contract and test the free-agent waters yet again?
If he does, Boston is put into a tough position. There aren't a whole lot of guys out there -- if any -- who can step right into Martinez's DH slot and put up numbers anything close to the 2018 World Series champion's level of production.
If Martinez indeed decides to sign elsewhere (the White Sox, perhaps?), the Sox could be left scrambling for a cheap short-term replacement off the open market. Here's a look at the top options this winter: