For a person that has yet to win a contest at that point Jessie is a decent coordinator, kind of like how James is a decent battler, but loses because of the plot or because Ash is among the strongest trainers in the world.
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BOP Results: http://www.freewebs.com/charmander6000/Rivalry%20BOP.xls
Rivalry Rumble: 93/120 Today: Cloud/Sephiroth