"It's nice to see Bryan's work and effort pay off with the league's weekly award," Indians Manager Trent Jewett said on Monday. "Bryan is a well-prepared and highly-energized individual. We are very happy about his recent success and hope it continues over the final three months of this season."
Bullington turned in a 3-6 record and 5.68 ERA in 11 Triple-A starts before his promotion. He went 3-1 with a 2.80 ERA over his last four starts after going 0-5 with an 8.04 ERA in his first seven outings.
"Bryan had a rough start to the season, but he continued to fight and battle," Indians Pitching Coach Ray Searage said on Monday. "Bryan's work ethic is a true example to the younger guys in our clubhouse. He's the type of guy who is always doing more than we ask of him."
The 27-year-old is in his sixth season with the Pittsburgh organization after being selected by the Pirates in the first round (first overall) of the 2002 draft.
The Indianapolis native and former Ball State University star spent the final month of 2005 and 2007 with the big league club. He owns an 0-3 mark and 5.29 ERA in six appearances for the Pirates.
In a corresponding roster move on Thursday, Pittsburgh optioned RHP Marino Salas back to Indianapolis.
Salas posted a 7.00 ERA (7 ER in 9 IP) and won his only decision in seven Major League relief appearances from May 13-28.
The 26-year-old went 2-0 with an 0.77 ERA and two saves in 14 Triple-A relief appearances from April 3-May 9 before receiving his first big league promotion.