First row of database data not updating after some time

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PHP

I'm using a form created in PHP. First I am getting two rows from the DB which I submit values to them using the form. I am using the same form for both of them. The values go into the DB but after some clicks the first row stops updating. I don't know what's going on.

I include a video of my problem. -->http://www.youtube.com/watch?v=uTFzfmJh8jU[^]

<?php
    session_start();
    include("connect.php");

    $query = "SELECT * FROM test ORDER BY `id` ASC LIMIT 2";
    $result = mysql_query($query);

    echo "<h2>Seria A</h2><hr/>";

    while($row = mysql_fetch_array($result)) {

        $id = $row['id'];
        $home = $row['home'];
        $away = $row['away'];
        $win = $row['win'];
        $draw = $row['draw'];
        $lose = $row['lose'];

        echo "<br/>",$id,") " ,$home, " - ", $away;
        echo "  
        <form action='seria.php' method='post' id='$id'>
            <input type='radio' name='select' value='1'>1
            <input type='radio' name='select' value='X'>X
            <input type='radio' name='select' value='2'>2
            <input type='hidden' name='id' value='".$row['id']."'/>
            <input type='submit' name='submit<?php echo $id; ?>' value='Submit'/>
    <br/>
        </form>";            

        echo "Totali ", $sum = $win + $lose + $draw, "<br/><hr/>"; 
    } 

    if (!empty($_POST)) {
        $id=isset($_POST['id'])&&is_numeric($_POST['id']) ? $_POST['id']:false;
        $select = isset($_POST['select']) ? $_POST['select']:false;

        switch ($select) {
            case 1:
            $select = $win + $select;
            mysql_query("UPDATE test SET win='$select' WHERE id='$id'");
            break;

            case 'X':
            $select = '1';
            $select = $draw + $select;
            mysql_query("UPDATE test SET draw='$select' WHERE id='$id'");
            break;

            case 2:
            $select = '1';
            $select = $lose + $select;
            mysql_query("UPDATE test SET lose='$select' WHERE id='$id'");
            break;

            default:
        }
        header('Location: ../seria.php');
    }
?>