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The 1990 Pittsburgh Pirates season was their 109th season; the 104th in the National League. This was their 21st season at Three Rivers Stadium. The Pirates finished first in the National League East with a record of 95–67. They were defeated four games to two by the Cincinnati Reds in the NLCS.
Offseason
December 4, 1989: Gordon Dillard was drafted by the Pirates from the Philadelphia Phillies in the 1989 rule 5 draft.
January 14, 1990: Mark Ross was signed as a free agent by the Pirates.
January 31, 1990: Wally Backman was signed as a free agent by the Pirates.
Regular season
Barry Bonds became the first Major Leaguer in history to have a .300 batting average, 100 RBI, 100 runs and 50 stolen bases in the same season. With 33 home runs, he became the second to have 30 home runs and 50 steals in a season, following Cincinnati's Eric Davis in 1987.
= Season standings
== Game log
== Record vs. opponents
== Detailed records
=Roster
= Opening Day lineup
=National League Championship Series
Awards and honors
Barry Bonds, OF, National League Most Valuable Player Award
Sid Bream, Hutch Award
Sid Bream, National League Record, Most Assists in One Season,
Doug Drabek, National League Cy Young Award
Doug Drabek, National League Pitcher of the Month, July
Doug Drabek, National League Pitcher of the Month, August
Jim Leyland, National League Manager of the Year Award
Andy Van Slyke, Outfield, Gold Glove Award
1990 Major League Baseball All-Star Game
Barry Bonds, OF, reserve
Bobby Bonilla, OF, reserve
Neal Heaton, P, reserve
Player stats
Batting
Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
Pitching
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
Notable transactions
May 2, 1990: Rico Rossy was traded by the Pirates to the Atlanta Braves for Greg Tubbs.
May 18, 1990: Roger Mason was signed as a free agent with the Pittsburgh Pirates.
June 5, 1990: The Pirates traded a player to be named later to the Baltimore Orioles for Jay Tibbs. The Pirates completed the deal by sending Dorn Taylor to the Orioles on September 5.
August 8, 1990: Scott Ruskin, Willie Greene and a player to be named later were traded by the Pirates to the Montreal Expos for Zane Smith. The Pirates completed the trade by sending Moisés Alou to the Expos on August 16.
September 1, 1990: Randy Kramer was traded by the Pirates to the Chicago Cubs for Greg Kallevig (minors).
Farm system
LEAGUE CHAMPIONS: DSL Pirates
References
1990 Pittsburgh Pirates team at Baseball-Reference
1990 Pittsburgh Pirates team page at www.baseball-almanac.com
Johnson, Lloyd; Wolff, Miles, eds. (2007). The Encyclopedia of Minor League Baseball (3rd ed.). Durham, North Carolina: Baseball America. ISBN 978-1-932391-17-6.