The 1884 Pittsburgh Alleghenys season was the third season of the Pittsburgh Alleghenys franchise. The Alleghenys finished 11th in the American Association with a record of 30âÂÂ78.
|- style="background:#fbb;" | 1 || Thursday, May 1 || Philadelphia Athletics || 2âÂÂ9 || 0âÂÂ1 |- style="background:#fbb;" | 2 || Friday, May 2 || Philadelphia Athletics || 2âÂÂ11 || 0âÂÂ2 |- style="background:#cfc;" | 3 || Saturday, May 3 || Philadelphia Athletics || 9âÂÂ8 || 1âÂÂ2 |- style="background:#fbb;" | 4 || Monday, May 5 || New York Metropolitans || 1âÂÂ6 || 1âÂÂ3 |- style="background:#fbb;" | 5 || Wednesday, May 7 || New York Metropolitans || 1âÂÂ8 || 1âÂÂ4 |- style="background:#fbb;" | 6 || Thursday, May 8 || New York Metropolitans || 1âÂÂ8 || 1âÂÂ5 |- style="background:#cfc;" | 7 || Friday, May 9 || Brooklyn Atlantics || 8âÂÂ2 || 2âÂÂ5 |- style="background:#cfc;" | 8 || Saturday, May 10 || Brooklyn Atlantics || 16âÂÂ6 || 3âÂÂ5 |- style="background:#cfc;" | 9 || Monday, May 12 || Brooklyn Atlantics || 9âÂÂ6 || 4âÂÂ5 |- style="background:#fbb;" | 10 || Tuesday, May 13 || @ New York Metropolitans || 4âÂÂ13 || 4âÂÂ6 |- style="background:#fbb;" | 11 || Wednesday, May 14 || @ New York Metropolitans || 2âÂÂ4 || 4âÂÂ7 |- style="background:#fbb;" | 12 || Thursday, May 15 || @ New York Metropolitans || 0âÂÂ8 || 4âÂÂ8 |- style="background:#cfc;" | 13 || Saturday, May 17 || @ Brooklyn Atlantics || 4âÂÂ3 || 5âÂÂ8 |- style="background:#fbb;" | 14 || Monday, May 19 || @ Brooklyn Atlantics || 6âÂÂ11 || 5âÂÂ9 |- style="background:#cfc;" | 15 || Tuesday, May 20 || @ Brooklyn Atlantics || 10âÂÂ1 || 6âÂÂ9 |- style="background:#fbb;" | 16 || Thursday, May 22 || @ Philadelphia Athletics || 1âÂÂ8 || 6âÂÂ10 |- style="background:#fbb;" | 17 || Friday, May 23 || @ Philadelphia Athletics || 4âÂÂ9 || 6âÂÂ11 |- style="background:#fbb;" | 18 || Saturday, May 24 || @ Philadelphia Athletics || 1âÂÂ10 || 6âÂÂ12 |- style="background:#fbb;" | 19 || Wednesday, May 28 || Columbus Buckeyes || 0âÂÂ5 || 6âÂÂ13 |- style="background:#fbb;" | 20 || Thursday, May 29 || Columbus Buckeyes || 0âÂÂ5 || 6âÂÂ14 |- style="background:#cfc;" | 21 || Friday, May 30 || Toledo Blue Stockings || 8âÂÂ6 || 7âÂÂ14 |- style="background:#fbb;" | 22 || Friday, May 30 || Toledo Blue Stockings || 1âÂÂ2 || 7âÂÂ15 |- style="background:#cfc;" | 23 || Saturday, May 31 || Toledo Blue Stockings || 5âÂÂ3 || 8âÂÂ15 |-
|- style="background:#fbb;" | 24 || Tuesday, Jun 3 || Indianapolis Hoosiers || 2âÂÂ3 || 8âÂÂ16 |- style="background:#cfc;" | 25 || Wednesday, Jun 4 || Indianapolis Hoosiers || 11âÂÂ6 || 9âÂÂ16 |- style="background:#fbb;" | 26 || Thursday, Jun 5 || Indianapolis Hoosiers || 10âÂÂ11 || 9âÂÂ17 |- style="background:#fbb;" | 27 || Saturday, Jun 7 || St. Louisville Eclipseis Browns || 5âÂÂ13 || 9âÂÂ18 |- style="background:#fbb;" | 28 || Monday, Jun 9 || St. Louisville Eclipseis Browns || 3âÂÂ9 || 9âÂÂ19 |- style="background:#fbb;" | 29 || Wednesday, Jun 11 || St. Louisville Eclipseis Browns || 0âÂÂ3 || 9âÂÂ20 |- style="background:#fbb;" | 30 || Thursday, Jun 12 || Cincinnati Red Stockings || 5âÂÂ7 || 9âÂÂ21 |- style="background:#cfc;" | 31 || Friday, Jun 13 || Cincinnati Red Stockings || 2âÂÂ0 || 10âÂÂ21 |- style="background:#fbb;" | 32 || Monday, Jun 16 || Louisville Eclipse || 3âÂÂ7 || 10âÂÂ22 |- style="background:#fbb;" | 33 || Tuesday, Jun 17 || Louisville Eclipse || 6âÂÂ7 || 10âÂÂ23 |- style="background:#cfc;" | 34 || Wednesday, Jun 18 || Louisville Eclipse || 6âÂÂ2 || 11âÂÂ23 |- style="background:#fbb;" | 35 || Thursday, Jun 19 || Cincinnati Red Stockings || 1âÂÂ7 || 11âÂÂ24 |- style="background:#fbb;" | 36 || Friday, Jun 20 || Columbus Buckeyes || 3âÂÂ6 || 11âÂÂ25 |- style="background:#fbb;" | 37 || Saturday, Jun 21 || @ Cincinnati Red Stockings || 0âÂÂ5 || 11âÂÂ26 |- style="background:#fbb;" | 38 || Sunday, Jun 22 || @ Cincinnati Red Stockings || 2âÂÂ4 || 11âÂÂ27 |- style="background:#fbb;" | 39 || Tuesday, Jun 24 || @ Cincinnati Red Stockings || 0âÂÂ12 || 11âÂÂ28 |- style="background:#fbb;" | 40 || Thursday, Jun 26 || @ Columbus Buckeyes || 3âÂÂ6 || 11âÂÂ29 |- style="background:#fbb;" | 41 || Friday, Jun 27 || @ Columbus Buckeyes || 1âÂÂ4 || 11âÂÂ30 |- style="background:#fbb;" | 42 || Saturday, Jun 28 || @ Columbus Buckeyes || 3âÂÂ4 || 11âÂÂ31 |- style="background:#cfc;" | 43 || Monday, Jun 30 || @ Toledo Blue Stockings || 4âÂÂ3 || 12âÂÂ31 |-
|- style="background:#fbb;" | 44 || Tuesday, Jul 1 || @ Toledo Blue Stockings || 3âÂÂ5 || 12âÂÂ32 |- style="background:#cfc;" | 45 || Wednesday, Jul 2 || @ Toledo Blue Stockings || 8âÂÂ7 || 13âÂÂ32 |- style="background:#fbb;" | 46 || Friday, Jul 4 || @ Indianapolis Hoosiers || 4âÂÂ15 || 13âÂÂ33 |- style="background:#cfc;" | 47 || Friday, Jul 4 || @ Indianapolis Hoosiers || 3âÂÂ1 || 14âÂÂ33 |- style="background:#fbb;" | 48 || Saturday, Jul 5 || @ Indianapolis Hoosiers || 3âÂÂ12 || 14âÂÂ34 |- style="background:#fbb;" | 49 || Sunday, Jul 6 || @ St. Louisville Eclipseis Browns || 6âÂÂ12 || 14âÂÂ35 |- style="background:#fbb;" | 50 || Tuesday, Jul 8 || @ St. Louisville Eclipseis Browns || 1âÂÂ7 || 14âÂÂ36 |- style="background:#fbb;" | 51 || Thursday, Jul 10 || @ St. Louisville Eclipseis Browns || 2âÂÂ11 || 14âÂÂ37 |- style="background:#fbb;" | 52 || Saturday, Jul 12 || @ Louisville Eclipse || 1âÂÂ4 || 14âÂÂ38 |- style="background:#cfc;" | 53 || Sunday, Jul 13 || @ Louisville Eclipse || 5âÂÂ4 || 15âÂÂ38 |- style="background:#fbb;" | 54 || Monday, Jul 14 || @ Louisville Eclipse || 0âÂÂ6 || 15âÂÂ39 |- style="background:#cfc;" | 55 || Thursday, Jul 17 || Washington Nationals || 3âÂÂ2 || 16âÂÂ39 |- style="background:#cfc;" | 56 || Friday, Jul 18 || Washington Nationals || 4âÂÂ2 || 17âÂÂ39 |- style="background:#cfc;" | 57 || Saturday, Jul 19 || Washington Nationals || 7âÂÂ1 || 18âÂÂ39 |- style="background:#fbb;" | 58 || Monday, Jul 21 || @ Washington Nationals || 3âÂÂ12 || 18âÂÂ40 |- style="background:#cfc;" | 59 || Tuesday, Jul 22 || @ Washington Nationals || 9âÂÂ8 || 19âÂÂ40 |- style="background:#fbb;" | 60 || Wednesday, Jul 23 || @ Brooklyn Atlantics || 4âÂÂ10 || 19âÂÂ41 |- style="background:#cfc;" | 61 || Thursday, Jul 24 || @ Brooklyn Atlantics || 6âÂÂ2 || 20âÂÂ41 |- style="background:#fbb;" | 62 || Saturday, Jul 26 || @ New York Metropolitans || 3âÂÂ9 || 20âÂÂ42 |- style="background:#fbb;" | 63 || Monday, Jul 28 || @ New York Metropolitans || 1âÂÂ9 || 20âÂÂ43 |- style="background:#fbb;" | 64 || Wednesday, Jul 30 || Baltimore Orioles || 2âÂÂ9 || 20âÂÂ44 |-
|- style="background:#cfc;" | 65 || Friday, Aug 1 || Philadelphia Athletics || 4âÂÂ3 || 21âÂÂ44 |- style="background:#fbb;" | 66 || Saturday, Aug 2 || Philadelphia Athletics || 2âÂÂ7 || 21âÂÂ45 |- style="background:#fbb;" | 67 || Monday, Aug 4 || Brooklyn Atlantics || 2âÂÂ4 || 21âÂÂ46 |- style="background:#fbb;" | 68 || Wednesday, Aug 6 || Brooklyn Atlantics || 0âÂÂ6 || 21âÂÂ47 |- style="background:#fbb;" | 69 || Thursday, Aug 7 || @ Philadelphia Athletics || 1âÂÂ7 || 21âÂÂ48 |- style="background:#fbb;" | 70 || Saturday, Aug 9 || @ Philadelphia Athletics || 2âÂÂ13 || 21âÂÂ49 |- style="background:#fbb;" | 71 || Monday, Aug 11 || @ Baltimore Orioles || 4âÂÂ10 || 21âÂÂ50 |- style="background:#fbb;" | 72 || Tuesday, Aug 12 || @ Baltimore Orioles || 3âÂÂ4 || 21âÂÂ51 |- style="background:#fbb;" | 73 || Wednesday, Aug 13 || Baltimore Orioles || 0âÂÂ8 || 21âÂÂ52 |- style="background:#fbb;" | 74 || Thursday, Aug 14 || Baltimore Orioles || 4âÂÂ14 || 21âÂÂ53 |- style="background:#fbb;" | 75 || Saturday, Aug 16 || New York Metropolitans || 0âÂÂ6 || 21âÂÂ54 |- style="background:#cfc;" | 76 || Monday, Aug 18 || New York Metropolitans || 1âÂÂ0 || 22âÂÂ54 |- style="background:#fbb;" | 77 || Friday, Aug 22 || @ Baltimore Orioles || 6âÂÂ8 || 22âÂÂ55 |- style="background:#fbb;" | 78 || Saturday, Aug 23 || @ Baltimore Orioles || 3âÂÂ7 || 22âÂÂ56 |- style="background:#fbb;" | 79 || Monday, Aug 25 || @ Baltimore Orioles || 3âÂÂ9 || 22âÂÂ57 |- style="background:#ffc;" | 80 || Tuesday, Aug 26 || @ Richmond Virginians || 4âÂÂ4 || 22âÂÂ57 |- style="background:#fbb;" | 81 || Wednesday, Aug 27 || @ Richmond Virginians || 5âÂÂ7 || 22âÂÂ58 |- style="background:#cfc;" | 82 || Thursday, Aug 28 || @ Richmond Virginians || 5âÂÂ0 || 23âÂÂ58 |-
|- style="background:#fbb;" | 83 || Monday, Sep 1 || Richmond Virginians || 5âÂÂ10 || 23âÂÂ59 |- style="background:#fbb;" | 84 || Tuesday, Sep 2 || Richmond Virginians || 1âÂÂ2 || 23âÂÂ60 |- style="background:#fbb;" | 85 || Wednesday, Sep 3 || Richmond Virginians || 4âÂÂ8 || 23âÂÂ61 |- style="background:#fbb;" | 86 || Thursday, Sep 4 || @ Toledo Blue Stockings || 2âÂÂ4 || 23âÂÂ62 |- style="background:#cfc;" | 87 || Saturday, Sep 6 || @ Toledo Blue Stockings || 10âÂÂ3 || 24âÂÂ62 |- style="background:#cfc;" | 88 || Sunday, Sep 7 || @ Columbus Buckeyes || 7âÂÂ3 || 25âÂÂ62 |- style="background:#fbb;" | 89 || Wednesday, Sep 10 || @ Columbus Buckeyes || 2âÂÂ10 || 25âÂÂ63 |- style="background:#fbb;" | 90 || Thursday, Sep 11 || @ Cincinnati Red Stockings || 1âÂÂ11 || 25âÂÂ64 |- style="background:#fbb;" | 91 || Saturday, Sep 13 || @ Cincinnati Red Stockings || 6âÂÂ11 || 25âÂÂ65 |- style="background:#fbb;" | 92 || Tuesday, Sep 16 || @ Louisville Eclipse || 1âÂÂ6 || 25âÂÂ66 |- style="background:#fbb;" | 93 || Wednesday, Sep 17 || @ Louisville Eclipse || 1âÂÂ4 || 25âÂÂ67 |- style="background:#fbb;" | 94 || Thursday, Sep 18 || @ St. Louisville Eclipseis Browns || 4âÂÂ6 || 25âÂÂ68 |- style="background:#fbb;" | 95 || Saturday, Sep 20 || @ St. Louisville Eclipseis Browns || 1âÂÂ4 || 25âÂÂ69 |- style="background:#cfc;" | 96 || Sunday, Sep 21 || @ Indianapolis Hoosiers || 4âÂÂ2 || 26âÂÂ69 |- style="background:#fbb;" | 97 || Wednesday, Sep 24 || Baltimore Orioles || 6âÂÂ8 || 26âÂÂ70 |- style="background:#cfc;" | 98 || Thursday, Sep 25 || Indianapolis Hoosiers || 15âÂÂ4 || 27âÂÂ70 |- style="background:#cfc;" | 99 || Saturday, Sep 27 || Indianapolis Hoosiers || 8âÂÂ4 || 28âÂÂ70 |- style="background:#cfc;" | 100 || Monday, Sep 29 || Indianapolis Hoosiers || 2âÂÂ0 || 29âÂÂ70 |-
|- style="background:#cfc;" | 101 || Wednesday, Oct 1 || St. Louisville Eclipseis Browns || 2âÂÂ1 || 30âÂÂ70 |- style="background:#fbb;" | 102 || Thursday, Oct 2 || St. Louisville Eclipseis Browns || 5âÂÂ10 || 30âÂÂ71 |- style="background:#fbb;" | 103 || Friday, Oct 3 || Columbus Buckeyes || 3âÂÂ14 || 30âÂÂ72 |- style="background:#fbb;" | 104 || Saturday, Oct 4 || Columbus Buckeyes || 4âÂÂ15 || 30âÂÂ73 |- style="background:#ffc;" | 105 || Monday, Oct 6 || Cincinnati Red Stockings || 8âÂÂ8 || 30âÂÂ73 |- style="background:#fbb;" | 106 || Tuesday, Oct 7 || Cincinnati Red Stockings || 3âÂÂ8 || 30âÂÂ74 |- style="background:#fbb;" | 107 || Thursday, Oct 9 || Toledo Blue Stockings || 3âÂÂ9 || 30âÂÂ75 |- style="background:#fbb;" | 108 || Saturday, Oct 11 || Toledo Blue Stockings || 0âÂÂ2 || 30âÂÂ76 |- style="background:#fbb;" | 109 || Tuesday, Oct 14 || Louisville Eclipse || 3âÂÂ10 || 30âÂÂ77 |- style="background:#fbb;" | 110 || Wednesday, Oct 15 || Louisville Eclipse || 4âÂÂ9 || 30âÂÂ78 |-
|- style="text-align:center;" | Legend: = Win = Loss = Tie
Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts