Mostly for fun. These are estimates based on runs, trials and some basic math.

				SAFE		"WR"
Rival 1			91			91
Route 1			99.9		99.9
Weedle Guy		94			88
Brock			90			77
Bug Catcher		99.9		99.9
Shorts Guy		93			85
Bug Catcher		99			96
Bug Catcher		99			97
Super Nerd		100			100
Lass			100			100
Rocket			99			95
Super Nerd		100			99.9
Cerulean Rival	98			92
NB1				99.9		99.9
NB2				99			97
NB3				99			95
NB4				98			90
NB5				99			85
Rocket			99.9		99.9
Hiker			99			90
Jr. Trainer		99.9		99.9
Jr. Trainer		99			98
Lass			99			98
Jr. Trainer		99			98
Misty			85			77
Rocket			99.9		99.9
Jr. Trainer		99			97
Jr. Trainer		99			98
S.S. Anne Rival	95			65
Surge			90			73
4-turn Thrash	93			77
Bug Catcher		99.9		99.9
Pokemaniac		99			97
Pokemaniac		99.9		99.7
Jr. Trainer		93			87
Hiker			99.5		99.5
Jr. Trainer		99.5		99.5
Gambler			99			98
Lavender Rival	93			88
Channeler		90			88
Channeler		99.9		99.9
Channeler		99.9		99.9
Rocket			100			100
Rocket			100			100
Rocket			99.9		99.9
Rocket			100			100
Rocket			100			100
Silph Rival		99			80
Rocket			99.9		99
Giovanni 1		99.9		87
Juggler			99.9		99.3
Juggler			97			74
Koga			100			99.7
Beauty			100			100
Tentacools		100			99
Erika			99.2		98.5
Blaine			99.2		100
Sabrina			98.7		98.7
Cooltrainer		99.9		99.8
Blackbelt		87			84
Giovanni		99			99
Viridian Rival	100			100
Lorelei			99.8		99.8
Bruno			96			95
Agatha			98			85
Lance			87			85
Champion		94			82

Odds of finishing (safe): 18.9%
Odds of finishing (risky): 1.0%

TOP RUN KILLERS (SAFE):
1. Misty (15%)
T-2. Blackbelt (13%)
T-2. Lance (13%)
4. Surge (10%)
5. Rival 1 (9%)

TOP RUN KILLERS ("WR"):
1. S.S. Anne Rival (35%)
2. Surge (27%)
3. Juggler (26%)
T-4: Brock (23%)
T-4: Misty (23%)
T-4: 4-turn Thrash (23%)