Jankowski had his contract selected by the Astros on Monday, Brian McTaggart of MLB.com reports.
This will mark Jankowski's first appearance on a major-league roster after the 28-year-old put together an impressive start to the season with Triple-A Fresno. Jankowski spun a 1.42 ERA and 1.16 WHIP with 22 strikeouts across 19 innings (17 games) at Fresno before being summoned by the big club. He'll offer an extra bullpen arm with the ability to pitch multiple innings. The Astros still need to clear a spot on the 40-man roster for Jankowski, so expect a corresponding roster move before he arrives.