Miller was a disaster for the Diamondbacks since being acquired from the Atlanta Braves following a career-year in 2015. Injuries limited him to only 28 starts over three seasons and he didn’t perform well in the rare appearances he did make, posting a 6.35 ERA during his time in the desert.
Arizona is still kicking themselves for making that deal, which cost them former No. 1 overall pick Dansby Swanson. It’s no surprise they let him go but that doesn’t mean he can’t resurrect his career somewhere else.
Miller showed a lot of potential early in his career, finishing third on the NL Rookie of the Year ballot in 2013 and making the All-Star team two years later. He’s only 28 years old so it’s not too late for him to get his career back on track as long as he’s healthy.
If Nathan Eovaldi isn’t re-signed, Boston may look to add a cheap starter to compete with Steven Wright, Brian Johnson, and Hector Velazquez for the final rotation spot. Miller could be as much of a bust as he was in Arizona but he has much higher upside than any of those internal options.