• Along with Kazmir, Oakland's other two top pitching acquisitions of the offseason were on display at Papago Park on Sunday, with closer Jim Johnson and setup man Luke Gregerson making good first impressions in their bullpen sessions.
"It's easy to see why these guys have had some success," Melvin said. "You can tell Johnson's a bit of a perfectionist. If he doesn't throw the ball exactly where he wants to, he gets upset with himself. Gregerson, I don't know if you put a million dollars on the table and tell him to throw the ball straight, that he could do it. There's so much deception there."
• Newcomer Chris Gimenez is in camp fighting for a job at catcher, but the A's "might look at him elsewhere" at different points this spring, too, according to Melvin. The versatile Gimenez, who has experience in the infield and outfield, took groundballs at first base this weekend, as did Norris.
"I wouldn't say anything is out of the question," Melvin said.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.