php - Laravel required_if not working

My required_if validation does not work. No error is output when "doubles" is selected but "team_mate2 and opponent2" are not selected. I need the form to require a second team mate and opponent when doubles is selected as the match type.

Match.php (Model)

<?php

class Match extends Eloquent{

    protected $table = 'matches';

    public static $rules = array(
        'match_type'=>'required',
        'associate'=>'alpha|min:2',
        'location'=>'required|alpha|min:2',
        'opponent'=>'numeric',
        'team_mate2'=>'required_if:match_type,doubles',
        'opponent2'=>'required_with:team_mate2'
    );

    public static $messages = array(
        'opponent.numeric'=>'You must select a player.'
    );

}
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MatchController.php

public function postCreate()
{

    $validator = Validator::make(Input::all(), Match::$rules, Match::$messages);

    if ($validator->passes()) 
    {

        $datetime = Input::get('year')."-".Input::get('month')."-".Input::get('day')." ".Input::get('time').":00";

        $match = new Match;
        $match->type = Input::get('match_type');
        $match->associate = Input::get('associate');
        $match->date = $datetime;
        $match->location = Input::get('location');
        $match->save();

        $matchp1 = new Matchplayer;
        $matchp1->user_id = Input::get('id');
        $matchp1->match_id = $match->id;
        $matchp1->team = 1;
        $matchp1->save();

        $matchp2 = new Matchplayer;
        $matchp2->user_id = Input::get('opponent');
        $matchp2->match_id = $match->id;
        $matchp2->team = 2;
        $matchp2->save();

        return Redirect::to('members/matches/create')->with('message', 'Match created!');

    }else{
        return Redirect::to('members/matches/create')->withErrors($validator)->withInput();
    }
}
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Match Create View

    {{ Form::open(array('url'=>'members/matches/create', 'action' => 'post', 'class'=>'form-horizontal')) }}
    {{ form::hidden('id', Auth::user()->id) }}
    <div >
      <label >Match Type</label>
      <div >
        {{ $errors->first('match_type', '<span >:message</span>') }}
        {{ Form::select('match_type', array('singles' => 'Singles', 'doubles' => 'Doubles'), 'singles', array('id' => 'match_type', 'class' => 'form-control input')) }}
      </div>
    </div>
    <div >
      <label for="gender" >League Associate</label>
      <div >
        {{ $errors->first('associate', '<span >:message</span>') }}
        {{ Form::text('associate', Input::old('associate'), array('class' => 'form-control input')) }}
      </div>
    </div>
    <div >
      <label >Team Mate #1<br><small></small></label>
      <div >
        <p >{{ Auth::user()->first_name." ".Auth::user()->last_name }}</p>
      </div>
    </div>
    <div >
      <label >Opponent #1</label>
      <div >
        {{ Form::select('opponent', $users, 'key', array('class' => 'form-control input')) }}
        {{ $errors->first('opponent', '<span >:message</span>') }}
      </div>
    </div>
    <div >
      <label >Team Mate #2<br><small>(Doubles Only)</small></label>
      <div >
        {{ Form::select('team_mate2', $users, 'key', array('class' => 'form-control input')); }}
        {{ $errors->first('team_mate2', '<span >:message</span>') }}
      </div>
    </div>
    <div >
      <label >Opponent #2<br><small>(Doubles Only)</small></label>
      <div >
        {{ Form::select('opponent2', $users, 'key', array('class' => 'form-control input')) }}
        {{ $errors->first('opponent2', '<span >:message</span>') }}
      </div>
    </div>
    <div >
      <label >Date</label>
        {{ $errors->first('day', '<span >:message</span>') }}
        <div >
          {{ Form::selectRange('day', 1, 31, 'a', array('class' => 'form-control input input-sm dob-form-control')) }}
        </div>
        <div >
          {{ Form::selectRange('month', 1, 12, 'a', array('class' => 'form-control input input-sm dob-form-control')) }}
        </div>
        <div >
          {{ Form::selectRange('year', 2014, 2015, 'a', array('class' => 'form-control input-sm input dob-form-control')) }}
        </div>
    </div>
    <div >
      <label >Time</label>
      <div >
        {{ Form::select('time', $times, 'key', array('class' => 'form-control input input-sm dob-form-control')) }}
      </div>
    </div>
    <div >
      <label >Location</label>
      <div >
        {{ Form::text('location', Input::old('location'), array('class' => 'form-control input')) }}
        {{ $errors->first('location', '<span >:message</span>') }}
      </div>
    </div>
    {{ Form::submit('Create', array('class'=>'btn btn-success btn-block')) }}
    {{ Form::token() . Form::close() }}
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