Morabito will start in left field and bat seventh Tuesday versus the Nationals in his major-league debut.
Most of the right-handed-hitting Morabito's playing time -- at least initially -- is expected to come against lefties, and he's in there Tuesday versus southpaw Foster Griffin. The rookie was promoted earlier in the day after slashing .253/.364/.390 with four home runs and 14 stolen bases across 41 contests with Triple-A Syracuse.