Why don’t jammers score on the first pass?

The first pass is used to establish “lead jammer.” Lead jammer the first jammer to make it through the pack by passing her opponents legally and in bounds. The lead jammer gains the strategic power to end the two-minute jam early. The lead jammer is not always the first jammer out, and it is possible to have no lead jammer if both commit a foul while trying to clear the pack. If there is no lead, the jam lasts the full two minutes.

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