It's safe to say that Rafael Betancourt is the least sexy name on this list. He's 40 years old, has never made an All-Star team and is pitching for the first time since 2013 after suffering a full UCL tear in his elbow.

That doesn't exactly scream "must-have trade acquisition."

But whileย Betancourt was never considered a dominant player, he's served as a highly successful reliever over the course of his 11-plus MLB seasons. The right-hander has amassed a 3.16 ERA over 657 innings out of the bullpen with a 9.5 strikeout per nine innings ratio. His career fielding independent pitching (FIP) of 3.01 andย ERA+ of 141 are even more impressive than his standards stats.ย 

Coming off the dreaded Tommy John surgery,ย Betancourt has picked up where he left offโ€”excelling in the second half of his career. He has a 1.69 ERA in 10.2 innings this season with an even better FIP (1.15) and an unbelievable 0.56 WHIP, which Iย quadrupleย checked because I assumed it had to be wrong.ย 

Though Betancourt has lost a little life on his fastball from hisย heyday, FanGraphs has him averaging a shade over 90 mph on heaters in 2015. That's on par with where he was pre-injury in 2013. His fastball placement has been strong enough to still leave hitters in the dust (.080 batting average against).

The former closer also is mixing in his changeup more this season. In 11 appearances, he's featured the pitch 26 times after throwing the changeup just 32 times in 2013 (32 games) and 56 times in 2012 (60 games). Opponents have yet to record a hit against the offering in 2015.ย 

Betancourt has succeeded in the American League with the Cleveland Indians and then thrived in the best hitters' park there is in Coors Field during his time with the Colorado Rockies. Transitioning to Fenway shouldn't be a concern and strengthening the pen is imperative with so many Red Sox starters struggling to make it through five innings.

Betancourtย would upgrade the bullpen spot currently held by Edward Mujica or Robbie Ross. Because of his age and uselessness of a setup man on a terrible Rockies team going nowhere fast,ย Betancourt should almostย certainlyย be put on the market.

One would assume the price wouldn't be tooย extravagant, but that could varyย depending on how many contenders are searching for a bullpen boost.ย 

ย 

Note: Stats are courtesy ofย Baseball-Reference.comย orย FanGraphs,ย unless otherwise noted. All prospect rankings courtesy ofย BaseballAmerica.com.