Here's what I found regarding Earl's path to victory in his 3 WPA World 9-Ball titles.
1990 -- Bergheim, Germany. 32 players. Single elimination. Best 3 out of 5 races to 5.
1. Bengt Pedersen, score not given
2. Ralf Souquet, 3-2 sets (2-5, 5-4, 3-5, 5-1, 5-1)
3. Allen Hopkins, 3-1
4. Nick Varner, 3-2 (5-2, 3-5, 5-0, 3-5, 5-2)
5. Jeff Carter, 3-1 (2-5, 5-4, 5-0, 5-0)
1991 -- Las Vegas. 64 players. Single elimination. Best 3 out of 5 races to 5 except for a single-set race to 9 in the semifinal and final.
1. Luo Suey, 3-0 (5-2, 5-1, 5-4)
2. Takeshi Okumura, 3-0 (5-2, 5-3, 5-0)
3. Howard Vickery, 3-0 (5-0, 5-0, 5-1)
4. Ralf Souquet, 3-1 (5-2, 5-1, 4-5, 5-1)
5. Takeshi Toda, 9-3
6. Nick Varner, 9-7
2002 -- Cardiff, Wales. 128 players. Round robin in 16 groups of 8, with the top 4 from each group progressing to a single-elimination Last 64.
Group stage -- opponents and scores not given
Last 64 -- Gary Ponting, 9-5
Last 32 -- Sin-Young Park, 9-6
Last 16 -- Jeremy Jones, 11-8
Quarterfinal -- Kunihiko Takahashi, 11-3
Semifinal -- Takeshi Okumura, 11-5
Final -- Francisco Bustamante, 17-15
Sources:
Pool & Billiard Magazine and
Billiards Digest