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06/17/11 12:06 AM ET

Hanson scratched from Friday's start

Club announces starter is suffering from right shoulder tendinitis

ATLANTA -- Tommy Hanson has battled right shoulder discomfort while still delivering in his last few starts. But the Braves have decided that it's best for him to skip his scheduled outing against the Rangers on Friday night.

During the early portion of Thursday night's 9-7, 10-inning walk-off win over the Mets, the Braves announced Hanson will miss Friday's start because of right shoulder tendinitis. They will call upon Randall Delgado to make the start in what will be the right-hander's Major League debut.

"It's been kind of lingering for a couple starts," Braves manager Fredi Gonzalez said of Hanson. "A young pitcher like that, you don't want to put him in a situation where it will be a long thing."

Hanson did not show any signs of discomfort while notching a career-high 14 strikeouts Sunday, when he limited the Astros to three hits and one run in seven innings. The 24-year-old right-hander has gone 7-1 with a 2.02 ERA in his past 10 starts.

Delgado was told about his first Major League promotion just before he was scheduled to start for Double-A Mississippi Thursday night. The 21-year-old right-hander has posted a 3.54 ERA and allowed opponents to hit .250 against him in 13 starts for Mississippi this year. The righty is the No. 3 prospect in the Braves' system as ranked by MLB.com.

With short notice, Delgado was the Braves' only legitimate option to make this start. He is already on the 40-man roster. Top pitching prospect Julio Teheran, who made two starts for Atlanta earlier this year, started for Triple-A Gwinnett on Tuesday night.

Mark Bowman is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.