SAN FRANCISCO -- A's left-hander Josh Outman was in brutal-honesty mode Saturday night.

Clearly frustrated in the wake of a 5-2 setback at the hands of the host Giants, Outman was an open vent.

Despite putting a 2-0 pitch to Bengie Molina in the first inning exactly where he wanted it, Outman could only watch as Molina's two-run homer put Oakland's anemic offense in an early hole.

"I didn't think he hit it that well," Outman said. "It looked like more of a popup to me, but I guess the wind carried it out."

Despite getting the popup he needed after Molina's leadoff double in the seventh, Outman could only watch as Pablo Sandoval's sky-shot fell safely to Mother Earth between right fielder Jack Cust, first baseman Bobby Crosby and second baseman Adam Kennedy.

Catchable ball, Josh?

"I thought so, the way the ball was staying up in the air [tonight]," he said. "It happens. It's part of the game. But it's frustrating."

Equally frustrating for Outman, it seemed, was that A's manager Bob Geren pulled him after Sandoval's "single." The score was 2-2 at the time, and Outman had retired 14 in a row before Molina's double.

Did you lobby Geren to stay in the game, Josh?

"No," Outman offered flatly. "It wouldn't have done any good. When Bob comes out there, his mind is made up. So [lobbying] would have been moot."

Righty reliever Michael Wuertz was greeted with a tiebreaking single by Juan Uribe, and after a sacrifice bunt moved Sandoval and Uribe into scoring position, Emmanuel Burriss hit a sacrifice fly to right. Lefty Craig Breslow was then summoned, and he gave up an RBI single to pinch-hitter Nate Schierholtz.

So despite having allowed five hits without a walk over six-plus innings, Outman was charged with four earned runs, ending his streak of quality starts at six and pinning him with his first loss of the year against four wins.

"You're going to lose games eventually," Outman said. "But to me, that was the absolute worst way to lose, when you're not allowed to give up your own runs."

Should be an interesting day in the principal's office Sunday. The next kangaroo court session ought to be a doozy, too.

But whatever tongue-lashings and fines might result from Outman's outburst, his calmly delivered diatribe wasn't far off the mark.

Of Molina's homer, for instance, A's catcher Kurt Suzuki said, "Josh did everything perfect. It was a changeup ... down and away. But Molina did everything perfect, too."

Neither Cust nor Geren seemed to agree with Outman's assessment of Sandoval's popup, though. Both called it "a perfectly placed ball."

And as Suzuki noted, "When you put the ball in play, you give yourself a chance."

Putting the ball in play wasn't a problem for the A's. Putting it where Giants couldn't make a play is what proved difficult against 45-year-old lefty Randy Johnson.

A night after watching 24-year-old Tim Lincecum throw a seven-hit shutout at Oakland, Johnson gave up two runs on four hits with one walk and three strikeouts over seven innings to pick up his 301st career victory.

The A's, who are assured of their first series loss since they dropped three of four in Texas to close out May, entered the game batting an MLB-low .203 against southpaws.

"We faced a pretty good one tonight," Geren said.

The Oakland offense consisted of a Jack Hannahan triple to open the third inning, an RBI single by Adam Kennedy later in the frame, a solo homer by Suzuki in the fourth, a single by Hannahan in the fifth, and an infield single by Matt Holliday off Giants closer Brian Wilson in the ninth.

"I wasn't there in the old days, when he was throwing 100 miles an hour," Suzuki said of Johnson. "But he's still 6-foot-10, and he still has a lot of deception and a pretty nasty slider."

Not to mention a salty disposition on the mound. Johnson's counterpart Saturday had that, too. After the game.