Boston, MA (My Sportsbook) - The Boston Red Sox will hold a news conference Tuesday at 10 a.m. (et) to announce the signing of pitcher John Smoltz.

The deal, which is for one year and is worth at least $5.5 million, was reportedly agreed upon last week for the right-hander, who has spent his entire big league career with Atlanta.

Smoltz is supposedly making tremendous progress following season-ending shoulder surgery. He went 3-2 last year for the Braves with a 2.57 earned run average in six games, five of which were starts.

As much progress as he has made, though, Smoltz likely won't be able to pitch until at least June.

A late round pick of the Detroit Tigers way back in 1985, Smoltz was traded to Atlanta in 1987 and has pitched all 20 of his big league seasons with the Braves. The 41-year-old hurler had been with one team longer than any other current major leaguer.

The only pitcher in big league history with at least 200 wins and 150 saves, Smoltz spent the first 12 years of his career in Atlanta as a starter. However, he missed the entire 2000 season after undergoing Tommy John surgery, then returned in 2001 and spent most of the year as a closer.

The 41-year-old Smoltz notched 154 saves from 2001 through 2004 before returning to the rotation for the 2005 campaign.

The 1996 Cy Young winner has a career mark of 210-147 in the regular season, and during his shortened 2008 season became the 16th pitcher to reach 3,000 strikeouts. He is also the winningest pitcher in postseason history with a record of 15-4.

Smoltz now joins a rotation that already includes Josh Beckett, Daisuke Matsuzaka, Jon Lester, Tim Wakefield and Brad Penny.