SAN FRANCISCO -- Phillies pitching prospect Jesse Biddle strained his right quadriceps in Saturday's start with Double-A Reading.
"We don't think it's serious but I haven't heard anything about it today," Phillies general manager Ruben Amaro Jr. said of the team's No. 4-ranked prospect.
It was Biddle's first start with Reading since being placed on the inactive list earlier this season because he needed a mental break. He allowed four hits, two runs and four walks and struck out four in 3 2/3 innings before leaving the game.
"He was OK until then," Amaro said about the injury.
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.