A day after the Portland Sea Dogs received a top pitching prospect, they lost one.

Right-hander Anthony Ranaudo was promoted Friday to Triple-A Pawtucket, becoming the 13th Sea Dogs player promoted to Triple-A this season.

The right-handed Ranaudo, the No. 6 pitching prospect in the Boston Red Sox minor league system according to Baseball America (14th overall), went 8-5 in 19 starts for Portland with a 2.90 earned-run average, third-best in the Eastern League. He had 106 strikeouts and 40 walks in 1092/3 innings.

His first Triple-A start will be Monday at Buffalo.

Ranaudo, who tied a Sea Dogs record with 13 strikeouts in a June 13 game against Erie at Hadlock Field, will be replaced in Portland by left-hander Chris Hernandez, sent down from Pawtucket.

Hernandez, who made 18 starts for the Sea Dogs in 2012, was 3-9 with a 5.72 ERA for the PawSox this year.

Hernandez was a seventh-round pick by the Red Sox in the 2010 draft out of the University of Miami.

Ranaudo is the third starting pitcher promoted to Pawtucket this year.

Drake Britton and Brandon Workman, who preceded him, have both seen time with the Boston Red Sox.

The moves came a day after left-hander Henry Owens was promoted to the Sea Dogs from Class A Salem.

Owens is rated as the fifth-best prospect in the organization by Baseball America.

He was 8-5 with a 2.92 ERA in 20 starts for the Salem Red Sox, leading the Carolina League with 123 strikeouts in 104 2/3 innings.

Owens went 19 1/3 innings without allowing a hit for Salem from July 11-28, pitching the first six innings in a combined no-hitter against Frederick on July 17.