Giants call up top pitching prospect Kyle Harrison

(Photo credit: Matt Kartozian-USA TODAY Sports)
The time is now for the San Francisco Giants top pitching prospect Kyle Harrison, with the left-hander set to make his major league debut Tuesday in a road start against the Philadelphia Phillies after he was called up from Triple-A Sacramento.

In addition to Harrison joining the roster, right-hander Ryan Walker was reinstated from the paternity list. Right-hander Sean Hjel