EMMA RADUCANU’S Dream Team partnership with Carlos Alcaraz at the US Open is in doubt — and the pair could miss out on a $1million prize pot.

The two former Flushing Meadows singles champs are set to play together as wildcards in the new Mixed Doubles Championship starting on Tuesday.

It will generate huge interest, especially given suggestions of a romantic link beyond the tramlines.

But Spanish ace Alcaraz , 22, is in the final of the Cincinnati Open tonight, facing Italy’s world No 1 and big rival Jannik Sinner, 24.

Normally, Masters 1000 events end on Sundays but this one was extended.

It takes two hours to fly between Cincinnati in Ohio and New York.

And Alcaraz may have to travel on the day he and Raducanu , 22, are supposed to play in the two-day knockout competition.

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