Danny Boyle's 64th minute goal sank hosts Andover and sent Fareham Town into the previously unchartered waters of today's FA Vase third round draw.
The midfielder applied the finish touch to a move sparked by substitute Steve Boston, who broke down the right and checked before setting up Boyle's winner.
Fareham deserved their victory on the strength of their battling second half performance, which shot-shy Andover were unable to match.
"We did well after the break and put them under a lot of pressure. Danny's goal was deserved," said co-Fareham manager Louis Savage.
"The greasy wet and cold conditions made it difficult for both sides, but I thought our lads did a great job and got the right result."
Andover didn't seem to have much of a cutting edge and their prospects of forcing a replay effectively ended when Lee Webber made a superb diving save to deny them an equaliser late on.
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