Washington (15-13) at San Francisco (14-13)

Barry Bonds’ setback is not surprising. Neither is Ray Durham’s, but at least he’s expected back on the field sometime soon.

After news that Bonds had knee surgery again, the San Francisco Giants hope Durham can bounce back quickly from his latest leg injury as they host the Washington Nationals in the opener of a three-game series.

Early Wednesday, Bonds said on his Web site that he had a third operation on his injured right knee. Bonds underwent arthroscopic surgery Monday as doctors tried to clean out an infection, first draining fluids from his knee, according to a journal entry Bonds posted.

Bonds has said he might not be back for at least half the season, maybe the whole season.

“It’s the third time that he’s going to be out longer, so we are accustomed to that now,” said Giants manager Felipe Alou, whose team lost 6-2 to the Arizona Diamondbacks on Wednesday.

Durham, who missed two games at Pittsburgh over the weekend because of a groin strain, was replaced by Deivi Cruz in the middle of the fifth inning Wednesday after aggravating his injury. Alou said the second baseman is day-to-day.

“Every year since he came to this club he’s been having some leg problem,” Alou said. “He broke a foot for the first injury, and he was out for four weeks, and then he had a hamstring. Either leg, it doesn’t matter. So it’s not like we’re snakebitten. That’s been here for a while.”

Alou is facing a franchise he managed for nearly a decade in a town that never fully embraced baseball. Alou managed the Montreal Expos from 1992-2001. The franchise moved to Washington and became the Nationals this season.

“They’re a better team,” Alou said. “They’re a good team and have been tough the past two years. I’m glad Frank (Robinson) got his wish to manage, to stay with the team after the uncertainty.”

Robinson allowed Livan Hernandez to throw 131 pitches en route to his first complete game of the season as the Nationals beat the Los Angeles Dodgers 5-2 Wednesday, taking two of three from the defending NL West champions.

Washington rebounded from one of its worst games of the season, a 3-2 loss to the Diamondbacks in which the Nationals made several base-running errors.

“You ask me if I know this team inside and out—no. I’m still learning. I’m still open-minded,” Robinson said. “I’m still surprised by some of the things they do. They are able to bounce back from bad ballgames. They come out the next day and it’s like they’re starting out fresh and nothing happened the day before. That’s a good approach.”

Nick Johnson had a homer and an RBI single Wednesday for the Nationals.

Washington leadoff hitter Brad Wilkerson, in a 1-for-24 rut, got the night off after starting the first 27 games.