Daily Red Sox Links: J.D. Martinez, Chaim Bloom, Rusney Castillo

Today is the day. J.D. Martinez has until 5 PM ET midnight to make a decision on the opt out in his contract. (John Tomase; NBC Sports Boston)

If he does decide to opt out, will the Red Sox look to re-sign the slugger? (Christopher Smith; Masslive)

Alex Speier looks a little more closely at how Chaim Bloom has gotten to where he is. (Alex Speier; Boston Globe)

As part of his Sunday Notes, Rob Bradford looks at what Bloom can bring from his days in Tampa. (Rob Bradford; WEEI)

Rusney Castillo, shockingly, has declined to opt out of his contract. (Boston.com)

Josh Osich spoke to FanGraphs’ David Laurila and discusses his penchant to change his repertoire year-to-year. (David Laurila; FanGraphs)