SCOTTSDALE, Ariz. -- The first full-squad workout had barely ended Tuesday, and already manager Bruce Bochy was contemplating how best to fill the 25th spot on the Opening Day roster.
Keep a fifth outfielder? Retain a third catcher? Add a 13th pitcher?
"We have a lot of good options," Bochy said.
If the Giants devote the spot to a position player, versatility is what Bochy will seek. Hence the Giants will closely watch Kelby Tomlinson, who has played primarily second base, to determine whether he can handle shortstop and third base. Non-roster invitee Kyle Blanks, an outfielder/first baseman, will be watched primarily at the latter position. Bochy added that Andrew Susac, the favorite to claim the backup catcher's spot, will be tried at first base, where he conceivably could fill in occasionally.
Bochy said that of the two rookie outfielders on the 40-man roster, Jarrett Parker, who went on a home run binge last September, has a better chance of making the Opening Day squad than Mac Williamson. Despite playing in last year's Arizona Fall League, Williamson is believed to need more Triple-A seasoning.

• Not only did right fielder Hunter Pence enjoy a pain-free workout after ending last season with an oblique injury, but he also liked the attitude he sensed from his teammates.
"It's a pretty good vibe right now," Pence said. "The underlying anticipation over the collective talent of this unit, the potential that's in this room, the competitors -- it's an exciting feeling in here," Pence said.
Another upbeat Giants player was center fielder Denard Span, who was limited to 61 games last year for Washington by groin and hip injuries.
"It felt good to be out there after last season," Span said.
• Bochy said that Edgar Renteria, hero of Game 5 of the 2010 World Series, will be in camp possibly as early as Wednesday to serve as a guest instructor. Renteria's three-run seventh-inning homer provided the Giants' scoring in their Series-clinching triumph over Texas.