However, their lead could then be short-lived as Aberavon take on Whitland on Monday afternoon (2.30pm), though the Wizards will find the Borderers are on a roll at present and there could be a very exciting match in prospect.
Llandovery and Rumney have opted to play on May 17 rather than tonight, but there will be seven matches playing in the division.
There will be a derby match at Pandy Park where Cross Keys entertain Newbridge and the Keys are desperate to make the top seven with a win very necessary. The same applies to Narberth, who should defeat Beddau at the Lewis Lloyd Ground on present form.
Glamorgan Wanderers have had a massive downhill move since Christmas, but their second team's Mallet Cup win this week will have cheered the club and tonight they entertain Blackwood.
Bonymaen are another club in search of a win to halt a slide and they travel to another Pandy Park ground - this one being the home of Tondu. Third-placed Carmarthen Quins will be another pressing for a win when they visit the Dairy Field to meet Llanharan and Tredegar's home match with Bedwas could prove very exciting.
Division Two's matches included a rearranged game at home for Llantrisant, where Brynmawr will provide strong opposition, while Corus face a battling Hirwaun; Rhymney go to Llantwit Fardre, who still have promotion prospects and Carmarthen Athletic entertain Cwmavon.
There will be matches in most divisions, though not full programmes with the meeting of Taffs Well against Nelson in Five Central likely to be entertaining and Hendy having a vital match at Laugharne in Five West.