OF Joey Rickard
The Giants acquired Joey Rickard from the Baltimore Orioles at midseason and he proved to be a solid outfield option off the bench. In 54 plate appearances after joining the Giants, he hit .280/.333/.380 with two doubles and one home run.
Those are respectable numbers for a guy who is primarily an asset on defense. He is also a right-handed hitter which would help to balance an outfield that looks like it will be lefty-dominated as things currently stand.
He makes sense as a good backup outfielder on a team that does not have a very strong outfield to begin with.
Those look like the five non-roster invitees most likely to earn a spot on the Opening Day roster. The fact that there is now a 26-man MLB roster could mean multiple guys from this list make the team, but that will all be resolved by the end of spring training.