Gil, who spent all of last season in the Yankees' farm system, went hitless in 10 at-bats this spring. The backstop hit .213 with six homers and 32 RBIs with the Double-A Trenton Thunder last season.
As for Niuman, he returns to the Minors after collecting a respectable four hits in 11 at-bats this spring for a .364 average. Niuman signed with the Orioles this offseason after hitting .300 with nine homers and 67 RBIs in 135 games with the Erie SeaWolves, Detroit's Double-A affiliate.
Paul Casella is a reporter for MLB.com. Follow him on Twitter @paul_casella. This story was not subject to the approval of Major League Baseball or its clubs.