Ealing Trailfinders can extend their perfect start to the RFU season to ten matches as they take on Caldy away from home. 

Having convincingly seen off Beford Blues last weekend, Ealing can make it double digit wins in the shortest possible space of time. 

The team standing between them and ten straight wins is second bottom club Caldy, who have just two wins all season. 

Kick-off at Paton Field is at 2pm on Saturday. 

Harlequins will hope to bounce back from losing their opening European Rugby Champions Cup group match as they host Racing 92. 

Quins lost their group opener in South Africa last week, narrowly missing out 39-31 against The Sharks. 

Their opponents in Racing 92 also fell to defeat last weekend, with a crushing 42-10 home defeat against Leinster to leave them bottom of Pool A after the opening round of matches. 

Kick-off at The Twickenham Stoop is at 5:30pm on Sunday. 

London Scottish will hope to build on two creditable performances as they take on Hartpury in the RFU Championship. 

Scottish got their first league win of the season two weeks ago against Caldy and followed that up with a heart breaking one-point loss against fifth place Doncaster Knights last weekend. 

They now face a Hartpury side in good form, having earned three of their four league wins in their last five matches. 

Kick-off at Richmond Athletic Ground is at 3pm on Saturday. 

London Welsh face table topping Wimbledon to test their improving form in Regional One South Central. 

Welsh have been climbing the table in recent weeks, winning two of their last three and four of their five league wins this season have come in their last seven games. 

However, their metal will be put through the sternest of tests as they take on Wimbledon, who have lost just once all season and no defeats at all since September. 

Kick-off at Chiswick is at 3pm on Saturday. 

Elsewhere in the area, London Irish are away against Stormers in the European Rugby Champions Cup at 5:30 on Saturday.