Giles, 37, is hitting .296 with a .391 on-base percentage.
Boston's interest in Giles might be spurred by concern about the health of third baseman Mike Lowell, who is battling a sore hip, and designated hitter David Ortiz, who has spent time on the disabled list resting a torn tendon sheath in his left wrist.
Giles is earning $9 million this year, and his contract with the Padres has a club option for $9 million for 2009 that would climb to $11 million if he is traded.
Giles has a limited no-trade clause, and Boston is among the teams to which he cannot be traded without his permission.
Joe Bick, Giles' agent, declined to discuss the situation.
* Blue JaysCito Gaston will return as manager next year. "Cito's definitely going to be back," general manager J.P. Ricciardi said. "He's done a good job." The Blue Jays fired manager John Gibbons on June 20 and gave Gaston the job for the rest of this season. Toronto is 24-17 since Gaston took over.
* DodgersBrad Penny (right shoulder tendinitis) is expected to come off the 15-day disabled list today to start at San Francisco. Manager Joe Torre said the right-hander likely would be limited to around 90 pitches. Penny has struggled with a 5-9 record and 5.88 ERA in 15 starts this season.
* NationalsWashington placed outfielder Elijah Dukes on the 15-day DL with a right calf strain and recalled right-handed pitcher Garrett Mock from Triple-A Columbus. The move with Dukes was retroactive to Sunday. Dukes is batting .264 with six homers and 23 RBIs in 54 games. Mock was 6-3 with a 3.01 ERA in 19 games for Columbus
* Phillies-CubsLeft-handed reliever Scott Eyre was acquired by Philadelphia from Chicago for minor league right-hander Brian Schlitter. Eyre, 36, was 2-0 with a 7.15 ERA in 19 games over two stints with the Cubs. Schlitter was 4-3 with six saves and a 2.22 ERA for Single-A Clearwater. He will report to Single-A Daytona Beach.