SF Giants’ top pitching prospect Whisenhunt to make debut on Monday

SAN FRANCISCO — With the Giants’ rotation in flux following Hayden Birdsong’s demotion and Landen Roupp’s injury, manager Bob Melvin announced following Sunday’s 5-3 loss to the New York Mets that top pitching prospect Carson Whisenhunt will start on Monday and make his major-league debut.

“We’ve been waiting for this for a little bit now,” Melvin said. “We thought maybe he’d be here last year, too. He’s our top pitching prospect, I believe. With what’s going on with the injury and Bird going down, there’s a need for it.