Royals LHP Danny Duffy to make big league debut

The Royals plan to bring up Danny Duffy to start against the Texas Rangers on Wednesday night in his major league debut.

Duffy, a 22-year-old left-hander, is 3-1 with a 3.00 ERA in seven starts and 36 innings at Triple-A Omaha. He is among many highly rated prospects the Royals have been bringing along in a minor league system rated among the best in baseball.

The Royals will select his contract from the Triple-A Storm Chasers.

On Monday night, following a 19-1 loss to Cleveland, the Royals announced that right-hander Vin Mazzaro was being optioned to Omaha and left-hander Everett Teaford was being recalled.