The Astros will promote top prospect Jarred Cosart to start against the Rays on Friday, Brian T. Smith of the Houston Chronicle reports. The righty will replace Lucas Harrell in the Astros' rotation. If Cosart sticks in the big leagues, he'll be eligible for arbitration after the 2016 season, and eligible for free agency after 2019.
Before the season, Jonathan Mayo of MLB.com ranked Cosart the No. 73 prospect in baseball, praising his 96-97 MPH velocity. ESPN's Keith Law (Insider-only) ranked Cosart No. 86, noting that he has great stuff and indicating that he could one day be a good closer if he doesn't make it as a starter. Baseball America's Prospect Handbook listed Cosart as the Astros' No. 7 prospect, arguing that improved command of his curveball would help him generate more strikeouts.
Cosart has pitched 93 innings for Triple-A Oklahoma City this season, posting a 3.29 ERA with 9.0 K/9 and 4.8 BB/9. The Astros acquired him from the Phillies in the Hunter Pence trade in 2011.