| Boys Baseball Class AA Bracket | 1997-98 | 
| Springfield (H.S) Sectional | ||||||
| Regionals | Sectionals | State Qualifier | ||||
| (1) East Peoria | (1) East Peoria 7-5  | 
(4) Normal (Community West) 6-4 (9 inn.)  | 
Normal (Community West) 5-1  | 
Normal (Community West) 7-2  | 
Olney (East Richland) 8-6  | 
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| (8) Pontiac | ||||||
| (4) Normal (Community West) | (4) Normal (Community West) 10-0 (5 inn.)  | 
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| (5) Pekin | ||||||
| (2) Morton | (2) Morton 16-4 (5 inn.)  | 
(2) Morton 9-5  | 
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| (7) Stanford (Olympia) | ||||||
| (3) Bloomington (H.S.) | (3) Bloomington (H.S.) 10-6  | 
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| (6) Normal (Community) | ||||||
| (1) Springfield (H.S.) | (1) Springfield (H.S.) 7-4  | 
(1) Springfield (H.S.) 5-3  | 
Springfield (H.S.) 12-5  | 
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| (8) Lincoln | (8) Lincoln 6-2  | 
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| (9) Taylorville | ||||||
| (4) Springfield (Lanphier) | (5) Jacksonville (H.S.) 13-10 (11 inn.)  | 
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| (5) Jacksonville (H.S.) | ||||||
| (2) Chatham (Glenwood) | (2) Chatham (Glenwood) 13-3 (6 inn.)  | 
(3) Springfield (Sacred Heart-Griffin) 8-7  | 
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| (7) Springfield (Southeast) | ||||||
| (3) Springfield (Sacred Heart-Griffin) | (3) Springfield (Sacred Heart-Griffin) 9-4  | 
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| (6) Quincy (Sr.) | ||||||
| (1) Champaign (Centennial) | (1) Champaign (Centennial) 4-3  | 
(1) Champaign (Centennial) 10-0 (5 inn.)  | 
Bradley (B.-Bourbonnais) 4-1  | 
Olney (East Richland) 5-3  | 
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| (8) Champaign (Central) | ||||||
| (4) Rantoul | (5) Kankakee (Sr.) 10-7  | 
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| (5) Kankakee (Sr.) | ||||||
| (2) Bradley (B.-Bourbonnais) | (2) Bradley (B.-Bourbonnais) 8-7  | 
(2) Bradley (B.-Bourbonnais) 3-2  | 
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| (7) Urbana (H.S.) | ||||||
| (3) Danville (H.S.) | (3) Danville (H.S.) 13-3 (5 inn.)  | 
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| (6) Mahomet (M.-Seymour) | ||||||
| (1) Charleston | (1) Charleston 15-0  | 
(5) Paris 6-4  | 
Olney (East Richland) 11-5  | 
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| (8) Decatur (MacArthur) | ||||||
| (4) Mattoon | (5) Paris 8-7  | 
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| (5) Paris | ||||||
| (2) Olney (East Richland) | (2) Olney (East Richland) 11-3  | 
(2) Olney (East Richland) 10-0 (5 inn.)  | 
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| (7) Decatur (Eisenhower) | ||||||
| (3) Effingham (H.S.) | (3) Effingham (H.S.) 10-0 (5 inn.)  | 
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| (6) Decatur (Stephen Decatur) | ||||||