Tracy said he's planning on starting rookie Derek Thompson on Thursday, but remains undecided for Saturday, the next time Wilson Alvarez's slot comes up. Alvarez started Monday's opener with the Cubs.
Neither Perez nor Elmer Dessens are options. Dessens will throw a simulated game Tuesday, but he is up to two weeks away from returning.
Post-game roster move: The club juggled backup catchers after the game, sending rookie Dioner Navarro back to Triple-A Las Vegas and purchasing the contract of Mike Rose.
Navarro was recalled Friday to replace Paul Bako, who was placed on the disabled list with a slight knee sprain. Navarro is a 21-year-old backstop.
Rose is 28 and in his 11th professional season, but he has only two games of Major League experience, last year in Oakland. He was hitting .294 at Las Vegas.
To make room for Rose on the 40-man roster, pitcher Buddy Carlyle was designated for assignment.
General manager Paul DePodesta said Navarro was called up to "get a taste," but that he needs to play and not sit on the bench.
Bradley, Choi out: Milton Bradley's sprained finger flexor tendon and Hee-Seop Choi's stiff left forearm required a makeshift lineup Monday that had Olmedo Saenz facing right-hander Greg Maddux and playing first base, with Ricky Ledee in left field, J.D. Drew in center and Jayson Werth in right field.
Bradley injured the fourth finger on his right hand on a swing in the ninth inning Sunday, and will have an MRI Tuesday to determine the severity of the injury.
Without Bradley or Choi, and with a five-man bench to begin with, Tracy's pickings are pretty slim in late-game situations. All he has to work with are rookie infielder Oscar Robles, rookie utilityman Mike Edwards and rookie catcher Dioner Navarro. Choi, 0-for-6 lifetime against Maddux, probably wouldn't have started anyway.
Bako better, but... : Disabled backup catcher Paul Bako was originally diagnosed with a mild sprain of the anterior cruciate ligament of his left knee, but Tracy said a second MRI will be taken after two weeks to re-evaluate.
Bako rode an exercise bike Monday with no problems, but when he tried to play catch, Bako didn't like the way it felt. The squatting and quick movements necessary for catching are out of the question for a while.
Werth unfazed: Werth said his two doubles Sunday were no more or less indicative of his recovery from a broken wrist than the two home runs he hit for Las Vegas just before he was recalled from his injury rehabilitation assignment.
"As soon as I hit those home runs, they called me up like I must be ready," said Werth. "So I come up and hit a couple [of] bleeders and they're only singles, but then I hit two doubles and I must be fine. I've thought I was fine for a while. The problem is, this is just like the first week of April for me, because I didn't have any Spring Training. It's to be expected.
"I'm getting comfortable and driving the ball, and that's where we're at. I'm gaining strength and flexibility and the feel of the swing. I think everything is going as planned, all things considered, and I feel good about it."
Nakamura rebounding: Since rejoining Triple-A Las Vegas on May 15, Japanese third baseman Norihiro Nakamura is batting .339 (19-for-56), collecting eight homers, one triple, three doubles, 18 RBIs and 11 runs scored. He has made starts at first base, shortstop and third base. In his earlier stint with Las Vegas, prior to moving up to the Major Leagues on April 10, Nakamura was 5-for-11 with two homers and six RBIs in three games. Nakamura's season totals for Las Vegas are now 10 homers and 24 RBIs, with a .358 batting average (24-for-67) in 18 games.
Coming up: Brad Penny, who held San Francisco scoreless for seven innings before allowing a pair of runs in the eighth, starts Tuesday night against the Cubs. Penny is 1-1 with a 2.45 ERA lifetime against Chicago.