The first is the situation at first base with Justin Smoak currently projected to get the largest share of at-bats to begin the season. That completely depends on how manager John Gibbons plans on using Steve Pearce.
The second hole would be the situation in left field which features the reported platoon of Melvin Upton Jr. and Ezequiel Carrera, who are not ideal platoon mates to begin with in the first place. Upton has a guaranteed spot on this roster.