On Monday, the Nationals will have to make a decision on outfielder/first baseman Mike Morse, who is currently on the 15-day disabled list and is close to finishing up his rehab assignment.
The Nationals could bring Morse back on 25-man roster or outright him to Triple-A Syracuse. If Morse is back on the 25-man roster, the team will have to take somebody off it.
Roger Bernadina appears safe because he is the regular right fielder, while Willie Harris is often the outfielder coming off the bench. Willy Taveras has been getting the least amount of playing time, but he is popular in the clubhouse and has accepted his role as a reserve.