Left fielder Adam Eaton will begin a rehab assignment this weekend at Double-Harrisburg and continue early next week at Single-A Potomac. He has missed 46 games with a left ankle bone bruise.
Martinez said first baseman Ryan Zimmerman, sidelined 17 games with a right oblique strain, and second baseman Murphy, still recovering from offseason micro-fracture surgery on his right knee, will be reevaluated by the team's medical staff early next week to determine a timetable.
Martinez added that Taylor will be back in the lineup on Saturday with Goodwin returning to his reserve role.
"Goodwin is a nice guy to have because he can play all three positions in the outfield," Martinez said. "He can pinch-run, steal a base, pinch-hit, drive the ball. For me, Michael is the center fielder. He saves us a lot of runs. I've got to be very conscious of getting these guys days off."