Outfield candidates Mac Williamson and Jarrett Parker are rookies; at this point, Williamson's presence on the Opening Day roster would be more of a surprise than Parker's, given all those home runs the latter hit last September. However, either one will have to force his way into a bench role by excelling almost nonstop during Cactus League play.
The Giants already have a long reliever, and he is Tim Lincecum.