Sure, he’s another White Sox cast-off. But that doesn’t mean he can’t surprise us.

Who is he and where did he come from?

He’s left-handed pitcher Bailey Horn, and like all effective pitchers, he was let go by the Chicago White Sox. Prior to his time with Boston’s plain counterparts, he spent time in Craig Breslow’s pitching lab with the Cubs.

What position does he play?

He’s a freak, an absolute mutant, one of the weirdest beings in this realm: a left handed reliever.

Is he any good?

He was designated for assignment by the White Sox, who own the league’s 27th-best bullpen ERA, so probably not. He’s a reliever though, and sometimes something as simple as moving six inches to either side on the rubber can turn a career journeyman into a lockdown reliever, so it’s worth taking a look.

Horn’s arsenal includes a sweeper, fastball, cutter, and curveball. The sweeper is a slow pitch with huge horizontal movement that provides high whiff rates. His fastball is the other attraction, coming in at about 95 MPH. Word of advice: if you’re a lefty who can throw 95 MPH and wants to spend some time in Worcester, try calling up the Red Sox. They might just sign you to a minor league deal.