LV= County Championship high-flyers Middlesex face Surrey in the biggest fixture at Lord's so far in 2013.
Middlesex have made a 100% start to the summer in the four-day game, with thumping 10-wicket and 9-wicket wins over Nottinghamshire and Derbyshire respectively leading to them being touted as early championship contenders.
Their squad shows a couple of changes from the win over Derbyshire at Lord's in April, with spinning all-rounder Ollie Rayner left out in favour of an extra seam option in former West Indies bowler Corey Collymore.
James Harris, who has suffered a stop-start beginning to his Middlesex career, has a reocurrence of the hamstring injury he picked up on debut against Nottinghamshire and is is ruled out.
Middlesex are therefore without their two higher profile quicks in Steven Finn and Harris, but in Tim Murtagh and Toby Roland-Jones - who was called up to the England Lions squad this week - they possess two of the most consistent performers on the county circuit.
Watch: Roland-Jones expects exciting clash
Gareth Berg's ongoing shoulder problems mean he's also omitted from the middle order, to be replaced by one from Adam London or Paul Stirling.
Ireland all-rounder Stirling's part-time off-spin could see him get the nod.
Surrey meanwhile have been frustrated by two draws, and sit at the foot of the table after their two matches.
Few expect them to remain languishing there for long though, after a winter of heavy investment in the squad which saw the introduction of Graeme Smith as captain.
Experienced county performers Gary Keedy and Vikram Solanki have added an experienced core to the squad, and England fast bowler Chris Tremlett is back in the side after an injury ravaged couple of years.