Here's another September promotion for your consideration: left-hander Robby Scott of the Boston Red Sox.
A native of Miami, Scott pitched two years cf college ball at Broward Community College then two more seasons with Florida State University, seeing limited bullpen use. He wasn't drafted after graduating in 2011, then signed with Yuma of the independent North American Baseball League. After fanning 19 men in 11 innings, he signed with the Red Sox as a minor league free agent. Since then he's risen slowly but steadily up the system, punctuating his resume with a strong 2016 campaign in Triple-A (2.54 ERA in 78 innings, 73/14 K/BB, 57 hits). He held lefties to a mere .147 average this year at Pawtucket.
Scott is a 6-3, 220 pound lefty born August 29, 1989. He doesn't burn radar guns, keeping his fastball in the 86-88 range, but he can mix in a solid-average curveball and a solid-average change-up. There's also some deception with his arm angle that helps his stuff play up, in combination with his strike-throwing ability.
His ability to control left-handers makes him a viable option for the LOOGY role as long as his command holds.