Oyeleke’s strike from inside the box smashed against the post before hitting former Spireite Grant Smith on its way in.
Kabongo Tshimanga doubled the lead in the first-half after latching onto a long ball by Scott Loach.
The win takes Chesterfield top of the National League and extends their unbeaten run to seven games.
Here are Liam Norcliffe’s player ratings from the match at Huish Park...
The win takes Chesterfield top of the National League and extends their unbeaten run to seven games.
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