Argentina have pulled out of their two matches against England's men later this month. The South Americans were due to play at Reading on 25 and 27 August and England Hockey are now actively seeking replacement opposition.
England's men will also play the Netherlands at Belle Vue, Manchester, on 17 August, and Cannock on 19 August.
England's women face Japan at East Grinstead (11 August), and Germany at Cannock (17 and 19 August).