Los Angeles Dodgers utility man Zach McKinstry (oblique) will begin his rehab assignment at Triple-A Oklahoma City on Friday. Manager Dave Roberts was unsure on how long of a stint that McKinstry would need before returning, but he is trending in the right direction. McKinstry came out of nowhere to start the season with a .296 batting average and three home runs to go along with 14 RBI, but he's been sidelined since April 22 with a right oblique strain. McKinstry should get some run in the ...