Roy Lee Jackson vs. Dave Leonhard — Career Comparison

Roy Lee Jackson
Baby BoomersAlabamaThrows RightBats RightNorth AmericaToronto Blue JaysAmerican LeagueRelief Pitcher
Dave Leonhard
Silent GenerationVirginiaThrows RightBats RightNorth AmericaBaltimore OriolesAmerican LeagueRelief Pitcher

The numbers give Roy Lee Jackson a clear advantage over Dave Leonhard across the core pitching metrics. Roy Lee Jackson led in strikeout rate (K%+ 92 vs 66), walk avoidance (BB%+ 115 vs 100), and skill-based run prevention (DICE+ 97 vs 89). Dave Leonhard held the edge in run prevention (ERA+ 117 vs 115). Roy Lee Jackson was the better reliever — the numbers make that case clearly.

Pitching Stats for Roy Lee Jackson and Dave Leonhard

Roy Lee Jackson
Careerverified
Per 9 Inningsverified
10
10
Dave Leonhard
Career
Per 9 Innings
6
6
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
280
4.51
Dave Leonhard
Career
Per 9 Innings
117
3.12
Roy Lee Jackson
Career
Per 9 Innings
18
0.29
Dave Leonhard
Careerverified
Per 9 Inningsverified
29
0.77
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
28
0.45
Dave Leonhard
Career
Per 9 Innings
16
0.43
Roy Lee Jackson
Career
Per 9 Innings
34
0.55
Dave Leonhard
Careerverified
Per 9 Inningsverified
14
0.37
Roy Lee Jackson
Career
Per 9 Innings
45.16
45.16
Dave Leonhard
Careerverified
Per 9 Inningsverified
53.33
53.33
Roy Lee Jackson
Career
Per 9 Innings
6.43
6.43
Dave Leonhard
Careerverified
Per 9 Inningsverified
24.79
24.79
Roy Lee Jackson
Career
Per 9 Innings
1
0.02
Dave Leonhard
Careerverified
Per 9 Inningsverified
7
0.19
Roy Lee Jackson
Career
Per 9 Innings
0
0
Dave Leonhard
Careerverified
Per 9 Inningsverified
4
0.11
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
34
0.55
Dave Leonhard
Career
Per 9 Innings
5
0.13
Roy Lee Jackson
Career
Per 9 Innings
234
3.77
Dave Leonhard
Careerverified
Per 9 Inningsverified
118
3.15
Roy Lee Jackson
Career
Per 9 Innings
3.77
3.77
Dave Leonhard
Careerverified
Per 9 Inningsverified
3.15
3.15
Roy Lee Jackson
Career
Per 9 Innings
3.66
3.66
Dave Leonhard
Careerverified
Per 9 Inningsverified
3.45
3.45
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
4.09
4.09
Dave Leonhard
Career
Per 9 Innings
4.74
4.74
Roy Lee Jackson
Career
Per 9 Innings
0.254
0.254
Dave Leonhard
Careerverified
Per 9 Inningsverified
0.232
0.232
Roy Lee Jackson
Careerverified
Per 9 Innings
1677
27
Dave Leonhard
Career
Per 9 Innings
1011
27
Roy Lee Jackson
Careerverified
Per 9 Innings
559
9
Dave Leonhard
Career
Per 9 Innings
337
9
Roy Lee Jackson
Career
Per 9 Innings
531
8.55
Dave Leonhard
Careerverified
Per 9 Inningsverified
287
7.66
Roy Lee Jackson
Career
Per 9 Innings
8.55
8.55
Dave Leonhard
Careerverified
Per 9 Inningsverified
7.66
7.66
Roy Lee Jackson
Career
Per 9 Inningsverified
50
0.81
Dave Leonhard
Careerverified
Per 9 Innings
32
0.85
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
0.81
0.81
Dave Leonhard
Career
Per 9 Innings
0.85
0.85
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
0.18
0.18
Dave Leonhard
Career
Per 9 Innings
0.27
0.27
Roy Lee Jackson
Career
Per 9 Inningsverified
203
3.27
Dave Leonhard
Careerverified
Per 9 Innings
150
4.01
Roy Lee Jackson
Career
Per 9 Innings
23
0.37
Dave Leonhard
Careerverified
Per 9 Innings
14
0.37
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
3.27
3.27
Dave Leonhard
Career
Per 9 Innings
4.01
4.01
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
351
5.65
Dave Leonhard
Career
Per 9 Innings
146
3.9
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
5.65
5.65
Dave Leonhard
Career
Per 9 Innings
3.9
3.9
Roy Lee Jackson
Career
Per 9 Innings
1.25
1.25
Dave Leonhard
Career
Per 9 Innings
1.25
1.25
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
0.991
0.991
Dave Leonhard
Career
Per 9 Innings
0.878
0.878
Roy Lee Jackson
Career
Per 9 Innings
20
0.32
Dave Leonhard
Careerverified
Per 9 Inningsverified
10
0.27
Roy Lee Jackson
Career
Per 9 Innings
17
0.27
Dave Leonhard
Careerverified
Per 9 Inningsverified
4
0.11
Roy Lee Jackson
Career
Per 9 Inningsverified
4
0.06
Dave Leonhard
Career
Per 9 Innings
4
0.11
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
2366
38.09
Dave Leonhard
Career
Per 9 Innings
1403
37.47
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
111
1.79
Dave Leonhard
Career
Per 9 Innings
24
0.64
Roy Lee Jackson
Career
Per 9 Innings
260
4.19
Dave Leonhard
Careerverified
Per 9 Inningsverified
125
3.34
Roy Lee Jackson
Career
Per 9 Innings
4.19
4.19
Dave Leonhard
Careerverified
Per 9 Inningsverified
3.34
3.34
Roy Lee Jackson
Career
Per 9 Innings
31
0.5
Dave Leonhard
Careerverified
Per 9 Inningsverified
7
0.19
Roy Lee Jackson
Career
Per 9 Innings
27
0.43
Dave Leonhard
Careerverified
Per 9 Inningsverified
5
0.13
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
52
0.84
Dave Leonhard
Career
Per 9 Innings
0
0
Roy Lee Jackson
Career
Per 9 Innings
1.313
1.313
Dave Leonhard
Careerverified
Per 9 Inningsverified
1.297
1.297
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
2088
33.62
Dave Leonhard
Career
Per 9 Innings
1237
33.04
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
0.93
0.93
Dave Leonhard
Career
Per 9 Innings
1.07
1.07
Roy Lee Jackson
Career
Per 9 Innings
0.285
0.285
Dave Leonhard
Careerverified
Per 9 Inningsverified
0.241
0.241
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
38.09
38.09
Dave Leonhard
Career
Per 9 Innings
37.47
37.47

Fielding Stats for Roy Lee Jackson and Dave Leonhard

Roy Lee Jackson
Careerverified
Per 9 Inningsverified
10
10
Dave Leonhard
Career
Per 9 Innings
6
6
Roy Lee Jackson
Careerverified
Per 9 Inningsverified
280
4.51
Dave Leonhard
Career
Per 9 Innings
117
3.13
Roy Lee Jackson
Career
Per 9 Innings
18
0.29
Dave Leonhard
Careerverified
Per 9 Inningsverified
29
0.78
Roy Lee Jackson
Careerverified
Per 9 Innings
1677
27
Dave Leonhard
Career
Per 9 Innings
1010
27
Roy Lee Jackson
Careerverified
Per 9 Innings
559
9
Dave Leonhard
Career
Per 9 Innings
336.2
9
Roy Lee Jackson
Careerverified
Per 9 Innings
35
0.56
Dave Leonhard
Career
Per 9 Inningsverified
27
0.72
Roy Lee Jackson
Careerverified
Per 9 Innings
71
1.14
Dave Leonhard
Career
Per 9 Inningsverified
65
1.74
Roy Lee Jackson
Career
Per 9 Innings
4
0.06
Dave Leonhard
Careerverified
Per 9 Inningsverified
2
0.05
Roy Lee Jackson
Careerverified
Per 9 Innings
110
1.77
Dave Leonhard
Career
Per 9 Inningsverified
94
2.51
Roy Lee Jackson
Careerverified
Per 9 Innings
106
1.71
Dave Leonhard
Career
Per 9 Inningsverified
92
2.46
Roy Lee Jackson
Career
Per 9 Innings
96.36
96.36
Dave Leonhard
Careerverified
Per 9 Inningsverified
97.87
97.87
Roy Lee Jackson
Career
Per 9 Innings
0.379
0.379
Dave Leonhard
Careerverified
Per 9 Inningsverified
0.786
0.786
Roy Lee Jackson
Career
Per 9 Innings
6.43
6.43
Dave Leonhard
Careerverified
Per 9 Inningsverified
24.79
24.79
Roy Lee Jackson
Careerverified
Per 9 Innings
4
0.06
Dave Leonhard
Career
Per 9 Inningsverified
3
0.08
Roy Lee Jackson
Career
Per 9 Innings
0
0
Dave Leonhard
Career
Per 9 Innings
0
0
Roy Lee Jackson
Career
Per 9 Innings
0
0
Dave Leonhard
Career
Per 9 Innings
0
0
Roy Lee Jackson
Career
Per 9 Innings
0
0
Dave Leonhard
Career
Per 9 Innings
0
0
Roy Lee Jackson
Career
Per 9 Innings
0
0
Dave Leonhard
Career
Per 9 Innings
0
0

Hitting Stats for Roy Lee Jackson and Dave Leonhard

Roy Lee Jackson
Careerverified
Per 600 PAverified
10
10
Dave Leonhard
Career
Per 600 PA
6
6
Roy Lee Jackson
Careerverified
Per 600 PAverified
282
5127.27
Dave Leonhard
Career
Per 600 PA
125
806.45
Roy Lee Jackson
Career
Per 600 PA
33
600
Dave Leonhard
Careerverified
Per 600 PA
93
600
Roy Lee Jackson
Career
Per 600 PAverified
31
563.64
Dave Leonhard
Careerverified
Per 600 PA
77
496.77
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.194
0.194
Dave Leonhard
Career
Per 600 PA
0.156
0.156
Roy Lee Jackson
Career
Per 600 PA
0.471
0.471
Dave Leonhard
Careerverified
Per 600 PAverified
0.479
0.479
Roy Lee Jackson
Career
Per 600 PAverified
6
109.09
Dave Leonhard
Careerverified
Per 600 PA
12
77.42
Roy Lee Jackson
Career
Per 600 PAverified
5
90.91
Dave Leonhard
Careerverified
Per 600 PA
10
64.52
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Careerverified
Per 600 PAverified
2
12.9
Roy Lee Jackson
Careerverified
Per 600 PAverified
1
18.18
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PAverified
1
18.18
Dave Leonhard
Careerverified
Per 600 PA
2
12.9
Roy Lee Jackson
Career
Per 600 PA
0.167
0.167
Dave Leonhard
Career
Per 600 PA
0.167
0.167
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PAverified
1.33
24.09
Dave Leonhard
Careerverified
Per 600 PA
2.41
15.53
Roy Lee Jackson
Career
Per 600 PAverified
8
145.45
Dave Leonhard
Careerverified
Per 600 PA
14
90.32
Roy Lee Jackson
Career
Per 600 PA
6
109.09
Dave Leonhard
Careerverified
Per 600 PAverified
17
109.68
Roy Lee Jackson
Career
Per 600 PA
0.194
0.194
Dave Leonhard
Careerverified
Per 600 PAverified
0.207
0.207
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.258
0.258
Dave Leonhard
Career
Per 600 PA
0.182
0.182
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.452
0.452
Dave Leonhard
Career
Per 600 PA
0.389
0.389
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.065
0.065
Dave Leonhard
Career
Per 600 PA
0.026
0.026
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.152
0.152
Dave Leonhard
Career
Per 600 PA
0.139
0.139
Roy Lee Jackson
Careerverified
Per 600 PAverified
0.308
0.308
Dave Leonhard
Career
Per 600 PA
0.279
0.279
Roy Lee Jackson
Career
Per 600 PA
0.261
0.261
Dave Leonhard
Careerverified
Per 600 PAverified
0.267
0.267
Roy Lee Jackson
Career
Per 600 PA
2
36.36
Dave Leonhard
Careerverified
Per 600 PAverified
6
38.71
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Careerverified
Per 600 PAverified
2
12.9
Roy Lee Jackson
Career
Per 600 PA
2
36.36
Dave Leonhard
Careerverified
Per 600 PAverified
8
51.61
Roy Lee Jackson
Career
Per 600 PAverified
1.18
21.51
Dave Leonhard
Careerverified
Per 600 PA
1.45
9.35
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Careerverified
Per 600 PAverified
5
32.26
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Careerverified
Per 600 PAverified
8
145.45
Dave Leonhard
Career
Per 600 PA
32
206.45
Roy Lee Jackson
Careerverified
Per 600 PAverified
4.13
4.13
Dave Leonhard
Career
Per 600 PA
2.91
2.91
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Careerverified
Per 600 PAverified
0.16
0.16
Roy Lee Jackson
Career
Per 600 PA
2
36.36
Dave Leonhard
Careerverified
Per 600 PAverified
11
70.97
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Careerverified
Per 600 PAverified
0
0
Dave Leonhard
Career
Per 600 PA
3
19.35
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Careerverified
Per 600 PAverified
1
18.18
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Careerverified
Per 600 PAverified
1
18.18
Dave Leonhard
Career
Per 600 PA
0
0
Roy Lee Jackson
Career
Per 600 PA
0
0
Dave Leonhard
Career
Per 600 PA