Opener's Rebid after 1D-1S 4

Opener's Rebid after 1D-1S 4

Question:

You are South. Matchpoints. 

You hold: 

2
AQ109
AK1032
654

What is your next call on the below auction:

  West    North    East    South  
   1diamonds icon
Pass1spades iconPass?

 

 


Answer: