West Tunnell, a Phoenix-area native (Anthem), is a 26-year-old right-handed reliever prospect who originally went undrafted in 2016. At Baylor, he was a reserve infielder but transitioned to pitching not too long afterwards. The Diamondbacks signed him in November of that year and put him in the bullpen. After a brief 2017 season where he was making the adjustment from position player to pitcher, he picked things up quickly in 2018 with a solid showing between Hillsboro and Visalia as a bridge guy then setup man. He would pitch the 2019 with Visalia and Jackson, serving as the closer between the two clubs (was the final pitcher in 36 of 43 outings).