From BR Bullpen
- Bats Right, Throws Right
- Height 6' 2", Weight 185 lb.
- School Heritage High School
 Biographical information
Paul Blackburn was a supplemental first-round pick in the 2012 amateur draft.
Blackburn had a 8-3, 1.27 record as a high school senior, striking out 84 and walking 17 in 77 1/3 IP and throwing a no-hitter. He had a commitment to Arizona State University when he was drafted by the Chicago Cubs with the 56th pick of the 2012 draft. The pick was Chicago's third overall, after Albert Almora and Pierce Johnson, and was compensation for the loss of Carlos Peña to free agency. He made his pro debut that summer with the AZL Cubs, going 2-0 with a 3.48 ERA in 9 games.
Blackburn pitched in the Cubs' system until 2016, with his best season coming in 2014 with the Kane County Cougars of the Midwest League, for whom he was 9-4, 3.23 in 24 starts. In 2016, he was 6-4, 3.17 in 18 starts for the Tennessee Smokies of the AA Southern League when on July 20th, he was traded to the Seattle Mariners along with Dan Vogelbach in return for Ps Mike Montgomery and Jordan Pries. After the trade, he went 3-1, 3.54 in 8 games for the Jackson Generals to finished with a combined mark of 9-5, 3.27. On November 12th, he was traded again, this time to the Oakland Athletics in return for major league utility player Danny Valencia.