Who holds record for ERA in a season on Red Sox?

Answer 1

Here's a list of the top ERA (Min. 100 IP) that pitched for the Red Sox:

Boston REDSOX

CAREER

INNINGS PITCHED >= 100

ERA ERA IP

1 Jonathan Papelbon 1.62 160.2

2 Joe Wood 1.99 1419

3 Cy Young 2.00 2728.1

4 Ernie Shore 2.12 841.2

5 Dutch Leonard 2.13 1361.2

6 Elmer Steele 2.19 205.1

7 Babe Ruth 2.19 1189.1

8 Carl Mays 2.21 1103.2

9 Frank Arellanes 2.28 410

10 Cy Morgan 2.29 384.1

11 Rube Foster 2.35 841.2

12 Charlie Smith 2.36 183.1

13 Jesse Tannehill 2.50 885.2

14 Pedro Martinez 2.52 1383.2

15 Ray Collins 2.53 1336.1

16 Mace Brown 2.56 179

17 Buck O'Brien 2.57 413.2

18 Dick Radatz 2.65 557

19 Long Tom Hughes 2.69 294

20 Eddie Cicotte 2.70 884

21 Tom Burgmeier 2.72 411

22 Larry Pape 2.80 283

23 Bill Dinneen 2.81 1501.2

24 Tex Pruiett 2.83 232.1

25 Sparky Lyle 2.85 331.1

26 Ralph Glaze 2.89 340

27 Sea Lion Hall 2.89 691.2

28 George Winter 2.91 1600

29 Norwood Gibson 2.92 609.1

30 John Wyatt 2.93 175.1

31 Fred Burchell 2.94 241.2

32 Charlie Chech 2.94 107

33 Tex Hughson 2.95 1375

34 Jay Ritchie 3.00 117

35 Luis Aponte 3.02 169.2

36 Harry Harper 3.04 163

37 Lee Smith 3.04 168.2

38 Hugh Bedient 3.04 668

39 Roger Clemens 3.06 2776

40 Dick Ellsworth 3.07 208

41 Dan Osinski 3.09 131

42 Earl Moseley 3.13 120.2

43 Gary Bell 3.14 364.1

44 Frank Barrett 3.17 176

45 Ed Karger 3.25 382.1

46 Joe Bush 3.27 780

47 Calvin Schiraldi 3.27 134.2

48 Ellis Kinder 3.28 1143

49 Bobby Bolin 3.28 162

50 Jeff Gray 3.28 112.1

51 Lefty Grove 3.34 1539

52 Chet Nichols 3.34 175

53 Joe Harris 3.35 317

54 Jim Corsi 3.35 147.2

55 Luis Tiant 3.36 1774.2

56 Rick Jones 3.38 104

57 Sad Sam Jones 3.39 1045.1

58 Frank Viola 3.40 452.2

59 Mike Ryba 3.41 583

60 Jeff Reardon 3.41 153

61 Jim Wilson 3.41 145

62 Vean Gregg 3.42 221

63 Jose Santiago 3.42 460.1

64 Roger Moret 3.43 558.1

65 Leo Kiely 3.44 502

66 Lee Stange 3.45 602.2

67 Rod Beck 3.46 135.1

68 Sonny Siebert 3.46 819.1

69 Paul Quantrill 3.47 210.1

70 Tully Sparks 3.47 142.2

71 Ferguson Jenkins 3.47 402

72 Frank Sullivan 3.47 1506

73 Mike Boddicker 3.49 528.2

74 Mike Timlin 3.50 359.2

75 Mel Parnell 3.50 1752

76 Ray Culp 3.50 1091.1

77 Ted Lewis 3.53 316.1

78 Gary Waslewski 3.55 147

79 Dick Drago 3.55 547.1

80 Jim Willoughby 3.56 202

81 Joe Dobson 3.57 1545

82 Bill Campbell 3.57 335

83 Vicente Romo 3.59 235.1

84 John Henry Johnson 3.62 117

85 Dizzy Trout 3.63 134

86 Jack Quinn 3.63 833

87 Bob Stanley 3.64 1707

88 Manny Delcarmen 3.64 106.1

89 Bill Lee 3.64 1503.1

90 Boo Ferriss 3.64 880

91 John Curtis 3.65 404

92 Ken Ryan 3.66 137.2

93 Herb Pennock 3.67 1089.2

94 Dave Hillman 3.68 115

95 Oscar Judd 3.68 354.1

96 Bill Monbouquette 3.69 1622

97 Derek Lowe 3.72 1037

98 Keith Foulke 3.73 178.1

99 Marty Pattin 3.73 472.1

100 Sid Hudson 3.74 361

101 Allan Russell 3.74 527

102 Rip Collins 3.75 211

103 Dennis Lamp 3.76 392.2

104 Juan Pizarro 3.77 117

105 Rich Garces 3.78 307.1

106 Bill Henry 3.78 319

107 Tom Seaver 3.80 104.1

108 Mickey McDermott 3.81 773

109 Jim Wright 3.82 139

110 Howard Ehmke 3.83 990

111 Joe Heving 3.83 308

112 Bucky Brandon 3.83 329

T113 Mike Paxton 3.83 108

T113 Bill Zuber 3.83 108

115 Randy Heflin 3.85 117

116 Waite Hoyt 3.86 226

117 Scott Bankhead 3.88 102

118 Bret Saberhagen 3.90 335

119 Bill Butland 3.90 150

120 Charlie Wagner 3.91 527.1

121 Greg Harris 3.91 651

122 Mickey Harris 3.92 689

123 Dennis Eckersley 3.92 1371.2

124 Jim Lonborg 3.94 1099

125 Tom Hurd 3.95 187

126 Curt Schilling 3.95 675

127 Milt Gaston 3.95 636

128 Dennis Bennett 3.95 287

129 John Tudor 3.96 636.2

130 Rick Wise 3.96 657

131 Pinky Woods 3.97 379

132 Mike Maddux 3.97 154

133 Tony Fossas 3.98 160.2

134 Mike Nagy 3.99 365.2

135 Rob Murphy 4.00 162

136 Tom Brewer 4.00 1509

137 Ike Delock 4.01 1207

138 Frank Tanana 4.01 141.1

139 Heathcliff Slocumb 4.02 130

140 Lloyd Brown 4.03 163

141 Joe Hesketh 4.04 495

142 Reggie Cleveland 4.04 752.2

143 Lynn McGlothen 4.07 168

144 Fred Mitchell 4.07 112.2

145 Mike Fornieles 4.08 642.1

146 Yank Terry 4.08 458.1

147 Don Schwall 4.09 361

148 Murray Wall 4.09 187

149 Earl Wilson 4.10 1024.2

150 Wes Ferrell 4.12 877

151 Ed Morris 4.12 662

152 Pat Rapp 4.12 146.1

153 Rheal Cormier 4.12 246.2

154 Danny Darwin 4.14 534.1

155 Steve Crawford 4.15 382

156 Steve Renko 4.15 336.1

157 Oil Can Boyd 4.15 1016.2

HI:D

Answer 2

Cy Young with a 1.26 ERA in 1908. Young's record that season was 21-11 and he gave up 42 earned runs in 299 innings pitched.