Despite seeing their final league match of the season against Ynysygerwn called off because of a waterlogged pitch, Ammanford remain in the South Wales Premiership for 2016.
St Fagans are relegated as a consequence of their five-wicket defeat against Pontarddulais.
Mumbles, who have been on the bottom for most of the season, produced a strong finish to avoid relegation.
They claimed a winning draw against Port Talbot after scoring 230 for four and reducing the Neath valley side to 173 for nine.
No surprise that a star-studded Bridgend Town were runaway League Champions, finishing 60 points clear of second placed Cardiff.
Ammanford finished in eighth place after a disappointing second half to the season, let down largely by uncharacteristically poor batting.
Despite this, skipper Alun Evans (707 runs at an average of 51) and Matthew Fisher (688 runs at an average of 57) were ranked in the top four Premiership batsmen.
The club looks forward to maintaining its local identity and holding its place amongst and even above the best of Welsh cricket in 2016.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here