Houston Astros

Halama made his debut with the Astros in 1998. Prior to that he had attended St. Francis College and Pitched for the Terriers from 1991-1994. Prior to that he attended and graduated from Bishop Ford H.S., Brooklyn, NY in 1990.

Seattle Mariners

In midseason 1998, Halama was sent to Seattle along with Freddy García and Carlos Guillén in the same trade that brought Randy Johnson to Houston. Halama won 41 games for the Mariners in a four-year span, with a career high 14 victories in 2000.

Oakland Athletics

In 2003, Halama went 3-5 in 35 games for the A's.

Tampa Bay Devil Rays

In 2004, Halama went 7-6 with a 4.70 ERA in 34 appearances, including 14 starts for the Devil Rays.

Boston Red Sox

Halama was signed by Boston as a free agent on December 17, 2004. After appearing in 30 games, Halama was released by the Red Sox on July 17, 2005.

Washington Nationals

Halama was signed by the Nationals on August 5, 2005 and made ten appearances for them, including three starts, before his release on October 2.

Baltimore Orioles

In 2006 he played his last big league season with the Baltimore Orioles.

Major league summary

Spanning a career of seven-plus seasons in the Major Leagues, Halama compiled a 53-44 record with 469 strikeouts and a 4.60 ERA in 860.1 innings pitched.

Pacific Coast League

In 2001, Halama threw the first nine-inning perfect game in the history of the Pacific Coast League.

Long Island Ducks

Halama pitched for the Long Island Ducks of the Atlantic League in 2007, leading the league in innings pitched with 167.1, He was later selected by the Southern Maryland Blue Crabs in the 2008 expansion draft.

Cleveland Indians

On June 5, 2008, Halama signed a minor league contract with the Cleveland Indians, and was assigned to the Triple-A Buffalo Bisons. He became a free agent at the end of the season.

Atlantic League -- Southern Maryland Blue Crabs

At the end of the 2008 season, Halama signed with the Southern Maryland Blue Crabs of the Atlantic League. There he went 8-1 with a 2.38 ERA. After his stint with Gwinnett, Halama rejoined the Blue Crabs in September 2009, and won two games, including the decisive game 5, in the first round of the Atlantic League of Professional Baseball playoffs.

Atlanta Braves

On June 13, 2009, the Atlanta Braves purchased Halama's contract from the Southern Maryland Blue Crabs. He started 13 games for the Triple-A Gwinnett Braves, and had a 4-7 record with 90 innings pitched before his release on September 18.

Milwaukee Brewers

Halama signed a minor league contract with the Milwaukee Brewers in November 2009.

On March 16, 2010, Halama was released by the Brewers.

Return to Oakland Athletics

On May 23, 2010 Halama signed a minor league contract with the Oakland Athletics. He was released by the team in September.

Lancaster Barnstormers

Halama pitched for the Lancaster Barnstormers of the Atlantic League of Professional Baseball. He was named to the 2012 Atlantic League All Star Team and was named the Starting Pitcher for the Freedom Division.

York Revolution

Halama served as the pitching coach for the York Revolution, rivals of his former team, the Lancaster Barnstormers, for the 2013 season.

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[ Source: Wikipedia ]