BOSTON (AP) – Jon Papelbon, who has made just four starts at Triple-A Pawtucket, will make his big league debut Sunday as Boston’s scheduled starter against the Minnesota Twins.

Manager Terry Francona announced the move Saturday night after Boston’s 6-2 victory over Minnesota. Brad Radke (6-10) starts for the Twins on Sunday. The 24-year-old righthander is 1-2 with a 3.57 ERA in four starts for Pawtucket. He’s walked just two batters while striking out 21 in 22 2/3 innings.

“He’s one of our bright young stars that we think a lot of,” Francona said.

Papelbon was 5-2 in 14 starts this season for Double-A Portland before being promoted to Pawtucket on July 4.

He won in his last appearance, on Tuesday, when Pawtucket beat Buffalo 9-to-1. He struck out eight in five innings of work. The 6-foot-4 pitcher was drafted by Boston in fourth round in 2003 out of Mississippi State. Left-hander Lenny DiNardo was optioned back to Pawtucket to make room on the roster for Papelbon, Francona said.

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