Los Angeles Angels center fielder Gary Matthews Jr. would not comment specifically yesterday on a report that said his name was listed as a customer of a steroid distribution network.

"I haven't read the story myself, and I don't have all the information," Matthews said in Tempe, Ariz., when asked if he had used performance-enhancing substances. "So until I get more information, this is going to be my position."

Albany County (N.Y.) District Attorney P. David Soares, who led an investigation into the distribution network, said that athletes' names were on the client list, although he would not identify any of them.

The Times Union of Albany, which first disclosed the investigation, reported that Matthews's name allegedly was included on customer lists for Applied Pharmacy Services in Mobile, Ala.

The two owners have been indicted by an Albany County grand jury.

Matthews said he didn't know why is name was reportedly on the client list, adding: "That's what we're working on, trying to find out. I will address it at the appropriate time."

· GIANTS: Barry Bonds declined to elaborate about death threats the slugger says he is receiving.

"We're not going anywhere with that," Bonds said while walking off the field following a workout in Scottsdale, Ariz.

Bonds told San Francisco's KGO radio on Tuesday that he has been receiving threats.

· YANKEES: Closer Mariano Rivera could make his 2007 spring training debut Monday.

Rivera, sidelined from Aug. 31 to Sept. 22 last year because of a muscle strain near his right elbow, has felt fine since spring training began. The 37-year-old right-hander threw off a bullpen mound yesterday, and wants to throw another bullpen session tomorrow.

· ATHLETICS: Outfielder Bobby Kielty needs arthroscopic surgery on his left knee and will be sidelined for three to six weeks. Kielty injured the knee Sunday during a rundown drill.

Center fielder Mark Kotsay underwent an MRI exam yesterday. He has a stiff back, a problem that affected him several times in 2006.

· METS: Left-hander Oliver Perez hit a Sports Illustrated photographer on the leg with one of his warmup pitches. He then walked only one batter in two innings, but gave up four runs and five hits as New York lost, 5-4, to the visiting Tigers in its spring training opener.

· WHITE SOX: Closer Bobby Jenks threw nine pitches in Chicago's opening spring training game before being taken out against Colorado because of tightness in his right shoulder.