A -According to Texas Hold'em tie-breaker rules, if no player is having a pair or cards in a sequence/suit, the player with the 'high-card' wins. If player A is holding K&e 9&f, B is having 5&f 8&` and the board comes 2&` 4&e Q&c 6&f 10&e, player A with 'K' wins over player B's '8'.