Early pressure, or a lack thereof, should decide the first open class pace of the season at Alexandra Park tonight.

And that complex puzzle could leave punters wishing they could bet after the first 400m.

Most of the north’s New Zealand Cup contenders clash in the $17,500 Dunstan Speedfeed Mobile, with only last week’s Alexandra Park winner Copy That and On The Cards, who won a July 1 race, having any race fitness.

The rest of the big names trialed against each other at Pukekohe last Friday, with Mach Shard (pictured) winning impressively for new driver Tony Herlihy.

His trainer Barry Purdon has four in tonight’s race and opts for Mach Shard as potentially his best chance but the bookies definitely don’t agree, with Belle Of Montana rated the $2.90 second favourite by the NZ TAB behind Copy That, with Mach Shard a very generous $9.50 in opening markets.

Hall of Fame trainer Purdon warns his assessment comes with a caveat.

“It is a really hard race to predict,” admits Purdon. “I have three on the front line and they all have gate speed, but I will leave their tactics up to the drivers,” Purdon said.

“Obviously if a mare like Wainui Creek led and stayed there it would help Belle Of Monatana because she could be trailing her from the second line, but there is so much gate speed in the front line, including my other two.

“So I really don’t know what to expect. I would rate Mach Shard the best of mine overall starting the season narrowly over Belle Of Montana. Let’s not forget Mach Shard did finish second in the Inter Dominion Final.

“But then you have a horse like Copy That who is a really good horse and likes to go forward too. So it could be quite an exciting race for this time of the season.”

Adding to that early pressure could be the attitude of Steve Telfer, who has three in the race.

“Mine have only had one workout so Triple Eight will go back at the start from his wide draw and hope they go hard,” says Telfer.

“But my other two, Check In and Dance Time, can’t afford to pull back at the start because they have good draws and there is no point settling worse than midfield. So they will be holding their place at least.”

While Copy That has race fitness on his side this is his first open class test and his $2.10 opening price looks short so Mach Shard probably represents the value.

Tonight also sees the return of one of the finds of the open class trotting ranks last season in Paramount King but he faces a huge test fresh up from a 45m handicap over 2200m so trainer Josh Dickie is going into the race anything by confident.

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