What is the number of players in the game of Polo?

What is the number of players in the game of Polo?

پولو کے کھیل میں کھلاڑیوں کی تعداد کتنی ہے؟
Explanation

Minimum Players required for games/sports

Cricket: 11

Football: 11

Hockey: 11

Basketball: 5

Rugby football: 15

Polo: 4

Water polo: 7

Volleyball: 6

Kabaddi: 7

Snooker: 1

Boxing: 2

Gymnastics: 8

Ice Hockey: 6