On Tuesday, the Padres claimed right-handed pitcher Enrique Gonzalez off waivers from the Washington Nationals and added him to the team's 40-man roster.

The Padres -- who will have pitchers and catchers report to the team's facility in Peoria on Feb. 14 for the start of Spring Training -- have 22 pitchers on the 40-man roster, as well as four non-roster invitees.

Gonzalez, 25, was designated for assignment by the Nationals on Jan. 31 to make room for catcher Johnny Estrada on the 40-man roster. Gonzalez didn't appear in a game with the Nationals last season.

Gonzalez appeared in one game for the Diamondbacks last season. He was 8-10 with a 5.14 ERA over 27 starts with Triple-A Tucson.

Gonzalez appeared in 22 games with the Diamondbacks in 2006, going 3-7 with a 5.67 ERA. He has a career 42-29 record in the Minor Leagues with a 3.49 ERA.

Gonzalez likely will be in the running for the fifth spot in the rotation but more likely a role in what is shaping up to be a crowded bullpen. Gonzalez is out of Minor League options.

Working out Sweeney: Free agent Mike Sweeney worked out at PETCO Park on Tuesday, taking batting practice, working in the outfield and meeting with manager Bud Black and general manager Kevin Towers.

Sweeney -- a five-time All-Star who makes his offseason home in nearby Rancho Santa Fe -- is 34 and said to be in good health after being limited to a combined 134 games in the last two seasons.

The Padres could make a decision as soon as Wednesday on whether or not they'll sign Sweeney. He is a career .299 hitter who could see playing time at first base, as a pinch-hitter, possibly in the outfield and as a designated hitter in Interleague road games.

Last month, Sweeney received the Hutch Award, which goes to the player who "best exemplifies the fighting spirit and competitive desire" of Fred Hutchinson.

Hutchinson, a former Major League pitcher and manager from Seattle, died of cancer in 1964. His brother, Dr. Bill Hutchinson, founded the Hutchinson Center, a world-renowned cancer research facility.

Sweeney and wife Shara have been active in Kansas City's Reviving Baseball in Inner Cities program, and also started the Sweeney Family Foundation.

Still no Greene: The Padres could officially announce as soon as Wednesday the signing of shortstop Khalil Greene to a two-year contract extension worth a reported $11 million.

A report on Saturday indicated that Greene's deal was done, though that wasn't likely the case at the time. The two-year deal for Greene means that the Padres won't have to go to arbitration with him.