Resolvi mi problema solito 8)
gracias de todas formas aca les dejo mi forma de resolverlo o.o
Código PHP:
foreach ($Players as $v)
{
$totDeaths = 0;
$deaths = $SQL->query("
SELECT
COUNT(player_id) AS n
FROM
deaths_in_wars
WHERE
player_id = ". $v[id] ."
GROUP BY
player_id
DESC LIMIT 1;");
foreach ($deaths as $q)
{
$totDeaths = $q[n];
}