KANSAS CITY -- Danny Duffy set a Double-A Northwest Arkansas record with 13 strikeouts Wednesday night in a 4-3 loss to Tulsa. Duffy, pitching for the Naturals while Triple-A Omaha is on its All-Star break, threw 5 1/3 innings, allowing two runs on four hits and a walk.
Right-hander Kelvin Herrera followed Duffy in the game, pitching a scoreless eighth with two strikeouts. Kansas City also optioned Herrera to Double-A during the Omaha's break, but recalled him Thursday for his third big league stint this season. He went 3-5 with a 5.20 ERA in 29 appearances over his two previous stays with the Royals.
• Left-hander Chris Dwyer represented Omaha in the Triple-A All-Star Game on Wednesday and stranded an inherited runner in the second inning, recording one out. Dwyer and the Pacific Coast League lost, 4-3, to the International League.
• Double-A center fielder Brett Eibner was named the Texas League Offensive Player of the Week for July 7-14. He went 12-for-27 with three doubles, three homers, a triple, five RBIs and six runs scored in six games during that time.
• Right-hander Kyle Zimmer took home Pitcher of the Week honors for Class A Wilmington. He went 2-0 with a 1.64 ERA, allowing two runs on six hits and one walk, striking out 23 batters in 11 innings.
Kathleen Gier is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.