League Leaders Who Led?

Baltimore Orioles Walks / 9 Leaders

Career totals with the Orioles and the best single seasons in club history. Records run through the 2025 season.

Orioles records →

Fred Glade holds the Orioles career record with 1.92 walks / 9. The single-season record is 1.19, by Scott McGregor in 1979.

ERA W SO SV WHIP IP K/9 BB/9 K/BB SHO CG GS G L BB W-L%

Rate records use the league's own minimums: a season needs the standard 1.0 inning per team game with the club, a career 1,000+ innings pitched with the club.

All-time Orioles leaders

Career totals with the club
# Player With the club BB/9 G
1 Fred Glade 1904–1907 1.92 126
2 Jack Powell Jack Powell 1902–1912 1.96 294
3 Hal Brown Hal Brown 1955–1962 1.99 204
4 Mike Mussina Mike Mussina 1991–2000 2.09 288
5 Urban Shocker Urban Shocker 1918–1924 2.10 260
6 Scott McGregor Scott McGregor 1976–1988 2.18 356
7 Harry Howell Harry Howell 1904–1910 2.22 201
8 Bob Muncrief Bob Muncrief 1937–1947 2.32 218
9 George Blaeholder George Blaeholder 1925–1935 2.42 280
10 Carl Weilman Carl Weilman 1912–1920 2.47 239
11 Barney Pelty Barney Pelty 1903–1912 2.52 255
12 Sam Gray Sam Gray 1928–1933 2.65 238
13 Mike Cuellar Mike Cuellar 1969–1976 2.67 290
14 Dave McNally Dave McNally 1962–1974 2.68 412
15 Lefty Stewart Lefty Stewart 1927–1932 2.75 191
16 Mike Flanagan Mike Flanagan 1975–1992 2.87 450
17 Milt Pappas Milt Pappas 1957–1965 2.93 264
18 Dennis Martinez Dennis Martinez 1976–1986 2.96 319
19 Jim Palmer Jim Palmer 1965–1984 2.99 558
20 Sidney Ponson Sidney Ponson 1998–2005 3.04 223
21 Scott Erickson 1995–2002 3.12 200
22 Mike Boddicker 1980–1988 3.14 190
23 Allen Sothoron Allen Sothoron 1914–1921 3.17 162
24 Earl Hamilton Earl Hamilton 1911–1917 3.24 233
25 Chris Tillman Chris Tillman 2009–2018 3.43 210

Single-season Orioles records

Best seasons in club history
# Player Season BB/9 G
1 Scott McGregor Scott McGregor 1979 1.19 27
2 Hal Brown Hal Brown 1960 1.25 30
3 Ed Siever Ed Siever 1903 1.38 31
4 Robin Roberts Robin Roberts 1963 1.43 35
5 Urban Shocker Urban Shocker 1922 1.47 48
6 Scott McGregor Scott McGregor 1983 1.56 36
7 Beany Jacobson 1906 1.57 24
8 Jack Powell Jack Powell 1909 1.58 34
9 Urban Shocker Urban Shocker 1923 1.59 43
10 Jack Powell Jack Powell 1908 1.65 33
11 Joe Lake Joe Lake 1911 1.67 30
12 Wei-Yin Chen Wei-Yin Chen 2014 1.70 31
12 Jack Powell Jack Powell 1903 1.70 38
14 Roy Mitchell Roy Mitchell 1913 1.72 33
14 Milt Pappas Milt Pappas 1964 1.72 37
14 Willie Sudhoff 1903 1.72 38
17 Mike Mussina Mike Mussina 2000 1.74 34
18 Hal Brown Hal Brown 1959 1.76 31
18 Elam Vangilder 1922 1.76 43
20 Hal Brown Hal Brown 1961 1.78 27
21 Mike Mussina Mike Mussina 1998 1.79 29
21 Mike Mussina Mike Mussina 1992 1.79 32
23 Harry Howell Harry Howell 1904 1.80 34
24 Fred Glade 1904 1.81 35
24 Dave McNally Dave McNally 1968 1.81 35