Will Giants own their tomorrow?

SAN FRANCISCO — The sign out there in centerfield at Oracle Park, above the new bullpen, is just one of many ballpark billboards but also one with a pertinent message for a team playing unexpectedly well.

“Own your tomorrows,” the sign reads. It’s a Charles Schwab slogan, about investing, but these days it could refer to the Giants, whose tomorrows suddenly seem excellent.

The Giants are off on Wednesday, off the field and on a jet, headed for Pittsburgh where they hope to carry the joy and the magic — and the fine pitching and timely hitting — they had at home. Five games in their ballpark, four wins including a 4-2 victory on Tuesday that gave them a sweep of the two-game mini-series against the Texas Rangers.

Patience at the plate, aggressiveness on the mound, 14 wins in the last 18 home games for San Francisco, for first-place San Francisco. And who knows what to think?

The Dodgers are better. The Padres are better. And yet, for the moment, they trail the Giants. As Sinatra sang, is that Granada we see or only Asbury Park?

No Mookie Betts. No Fernando Tatis Jr. Only a well-designed plan worked out by Giants manager Gabe Kapler and his coaches to emphasize the potential provided by head of baseball operations Farhan Zaidi.

They’ve got older players who still have it, Buster Posey, Brandon Belt, Evan Longoria, Brandon Crawford, Alex Wood; and younger players who are getting it, Wilmer Flores, Mike Yastrzemski and Tuesday’s starting pitcher, Logan Webb, who went six innings, allowing only two hits and two runs and striking out a career high 10.

“He has a long way to go before he reaches his ceiling,” Kapler promised about Webb. The Giants similarly have a long way to go before they, or we, should get excited about their postseason chances. Then again, after four straight losing seasons, this one at least offers a tantalizing hint of improvement.

And reminders of not-so-long-ago victories, those three World Series championships over a period of five years when the Giants stayed close on pitching and — as Hunter Pence, in town to comment on the recent games for local TV — came up with the big hit.

One thing the Giants are not doing is trying to perform beyond their capabilities. They aren’t the Yankees or Astros.

They’ll be happy with a walk. Rangers starter Jordan Lyles threw 34 pitches in his half of a first inning that lasted 35 minutes.

“Our approach is simple,” Kapler said of the offense. “Go after a pitch we can hit. Take pitches until we find one we like.”

On the other side, don’t throw too many pitches the other guys can hit, which is where Webb comes in. He had one of his better games, after the Giants catchers — Curt Casali, who was in the lineup, and Buster Posey, who wasn’t — told Webb to speed up his tempo. Which he did.

Asked what he thought of Webb’s performance, and whether it was his best game in his three seasons with the Giants, Kapler was properly measured in his answer. He liked the strikeouts. He liked the result, but best? Let’s wait before passing judgment. “Webby has a high ceiling,” Kapler said. “Let’s wait a couple of years.”

Three Texas challenges on calls in the first four innings. The Rangers won each, but Kapler didn’t care, pointing out that the idea of the replays is to end up with the correct decision.

Yes, we should wait until October. But here in the merry month of May, the controversial decision to hire Kapler a couple years ago — remember the outrage — and the decisions by he and his staff have been more than acceptable.