The track manager at Randwick Racecourse Navesh Ramdhani is optimistic the racing surface will continue to improve from the unavoidable Heavy 10 witnessed last weekend but once again the rain is the key to the rating for Sydney Cup Day.

Already it has been upgraded back to a dead 5 but with so much water already soaked into the ground any more heavy rain will be tough to drain away.

“The weather is a bit concerning, the clouds are starting to roll in,” Ramdhani said.

“Hopefully it’s not a repeat of last week.”

As expected the rail will move out for this weekend and will be at seven metres from the 1600m to the winning post and then 3m for the rest of the circuit.

“It’s designed to find the best grass for Saturday,” Ramdhani said.

“We originally planned to move it out to the six-metre position but with the rain that fell during last Saturday’s meeting the track copped a bit of a hammering so we went out another metre.”

Wednesday has started with plenty of cloud overhead with a 30 percent chance of rain predicted to fall around late afternoon or early evening.

This weather pattern is likely to stick around right up until race day with t lingering overcast conditions but as yet no thoughts of large scale storms.