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01/30/12 4:48 PM EST

Corpas among 21 non-roster invitees

Top prospect Jackson also heading to Cubs spring camp

Former Rockies closer Manny Corpas and top prospect Brett Jackson headlined a list of 21 non-roster players invited by the Cubs on Monday to participate in Major League Spring Training camp.

Corpas, 29, signed a one-year Major League deal with the Cubs in December, but was sent outright to Triple-A Iowa last week after Chicago re-signed reliever Kerry Wood. Corpas missed all of 2011 after undergoing Tommy John surgery on his right elbow the previous season, and inked a deal with the Cubs that includes a slew of incentives for appearances and days on the Major League roster.

Corpas gets a $200,000 salary in the Minor Leagues and would earn $1,000,000 in the Majors, $200,000 of which is guaranteed. He would earn another $50,000 each for 50 and 55 games, $100,000 each for 60 and 65 games, $100,000 for 35 games finished, $150,000 for 40 games finished, $150,000 for 45 games finished, and $200,000 each for 50, 55 and 60 games finished. Corpas would also get $175,000 for spending each of 100, 120,140 and 160 days on the big league roster.

He is one of nine pitchers invited to Cubs camp as non-roster players. The others are right-handers Marco Carrillo, Jay Jackson, Rodrigo Lopez, Trey McNutt, Blake Parker and Dae-Eun Rhee and left-handers Trever Miller and Chris Rusin.

The Cubs also invited three catchers -- Michael Brenly, Jason Jaramillo and Blake Lalli; five infielders -- Alfredo Amezaga, Edgar Gonzalez, Jonathan Mota, Bobby Scales and Matt Tolbert; and four outfielders -- Jackson, Jim Adduci, Jae-Hoon Ha and Joe Mather.

Of those 21 players, nine have played in the Majors. At the top of the service time list is Miller, the 38-year-old left-hander who owns a 4.18 ERA in 694 appearances over parts of 13 seasons with eight organizations. The southpaw pitched for St. Louis, Toronto and Boston last season, combining to go 0-1 with one save and a 3.80 ERA in 48 relief appearances.

Miller would earn $800,000 in the Majors with $350,000 more available in performance bonuses. He would get $50,000 each for 50 and 55 appearances, $75,000 each for 60 and 65 appearances and another $100,000 if he reaches 70 appearances. He's topped 70 games four times in his career; in 2003 for Toronto, '06 and '07 for Houston and in '09 with St. Louis.

If Miller is not added to the 40-man roster on March 28, he can request his release.

The most veteran position player in the group is Amezaga, 34, a career .247 hitter in parts of nine seasons with the Angels (2002-04), Rockies ('05, '11), Pirates ('05) and Marlins ('06-'09, '11) covering 584 games. The versatile switch-hitter has appeared in a Major League game at every position but pitcher and catcher, with his most appearances at shortstop -- 117 games.

Amezaga would earn a $750,000 base salary in Majors plus $50,000 each for 80 games, 110 games, 250 plate appearances, 300 plate appearances and 350 plate appearances. He can request his release on June 1 if he's not in the Majors.

Cubs Spring Training officially begins on Feb. 18 when pitchers and catchers are invited to report to Mesa, Ariz. Their first workout will take place the following day, and the Cubs first full-squad workout is set for Feb. 24.

Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.