The result means Leicester City is relegated to the second tier after a five-year stint in the top division, concluding a difficult season where they scored only 11 goals in 22 league matches.
The defeat compounds frustration for Leicester fans, following the recent relegation of their men's senior team to League One.
Under revised competition rules for the upcoming season, the expansion from 12 to 14 teams will guarantee an automatic promotion spot for the WSL2 champion, while the bottom WSL club faces automatic relegation.
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Leicester City will next participate in the World Sevens tournament in Brentford on Thursday as they prepare to restructure for life in the second division.