Dodgers adjust pitching staff, recall RHP Michael Petersen

(Photo credit: Isaiah J. Downing-USA TODAY Sports)
The Los Angeles Dodgers recalled right-hander Michael Petersen on Monday and optioned left-hander Justin Wrobleski to Triple-A Oklahoma City.

Peterson, 30, made his major league debut June 18 and went 3-0 with a 4.50 ERA in nine relief appearances over two separate stints with the Dodgers earlier this season. He was in his eighth minor league season before making his MLB