The Davis Cup Semifinal Round kicks off after US Open (Last week of August). Here are the ties, the countries with the choice of the surface will have a "(c)" next to it:
Pakistan (c) - Chile (s)
Poland (s) (c) - Egypt
*(s) denotes seeded countries.
Surfaces must be chosen 1 week before the Semi Final Round (middle Sunday during US Open - August 25th ).
Players must be chosen by Thursday August 29th