Llanharan and Maesteg bid to make it 10 wins in 10 matches each before the meet in the Lloyds TSB Welsh National League at Maesteg's Llynfi Road ground on Tuesday evening, when leaders Llanharan go to Tredegar and Maesteg travel to Blackwood on Saturday.
Among the best-looking encounters in Division One could be between Rumney and Bonymaen at Riverside Park and at Beddau, where powerful Narberth are visitors, but where the home side will prove they are no push-overs. The Brynmawr-Tondu game is off as Tondu cannot travel.
A match looking unlikely to play is at Croesyceiliog in Division Two east, as visitors Abertillery are nearing the last-chance saloon, being short of players and with secretary David Mason stating: "It is not looking good, but is still a confusing situation."
The match of the day in that division is at Y Parc, where leaders Abercynon will come up against unbeaten Fleur de Lys, while Builth Wells entertain the lively Rhymney side.
In Two West, Corus take on Cardigan and fellow pacemakers Bridgend Athletic and Dunvant have away games at Cwmllynfell and Aberavon Quins respectively.
Senghenydd's trip to Cardiff to meet Old Illtydians in Three East is off, giving Pill Harriers and Newport HSOB the chance to lead by three points, while in Four East runaway leaders Bargoed entertain St Peter's, who faltered of late.
Kidwelly and Pontyberem are unbeaten with six wins in Three West, while Haverfordwest have five straight victories. Kidwelly take their record to Gowerton, Pontyberem are home to Hendy and Haverfordwest at home to Penclawdd.
Match of the day in Four West is easy, as the unbeaten Llandybie (six wins) take on the also unbeaten Loughor (five wins). Division Three South-East leaders Treherbert meet Barry, who are on a bad run and in Three South-West Maesteg Quins would go ahead of Bryncoch at the top if they defeat Banwen, as Bryncoch's match at Trebanos is off. The Quins will soldier on at home despite having had their changing rooms destroyed by fire.
Penarth welcome new opponents in Abercwmboi in Four South-East, where the Dowlais home match with Hoel-y-Cyw looms large and in Four South-West Cwmgors hope to get back on the winning trail against Morriston and fend of Taibach, who meet Amman United in an attractive fixture.
There will be no league rugby again in either Four North or Five North, but in Five East Machen have the chance to join Trinant on six wins if they beat Oakdale, as Trinant are the byed club in that division.
Division Five West leaders Cefneithin make the trip to Llangwm and in Five South-West the game of the day is at Resolven where both they and visitors Pontardawe have played six, won six, thus far. In Five South-East, leaders Llantwit Major are at home to Canton and Llandaff have an attractive match against South Wales Police on Bishops Field.