Exclude a certain post from the loop.

wp-loop-exclude-post-query

From:

http://wordpress.org/support/topic/multiple-loops-if-first-post-in-loop-1-matches-first-post-in-loop-2-skip

Add this after the query:

  $check = get_posts('cat=3&numberposts=1');
  if ( $check[0]->ID == $post->ID ) continue;
  
Sample loop:

  <?php $args = array( 'post_type' => 'post');	
						
	$loop = new WP_Query( $args ); ?>

  <?php while ( $loop->have_posts() ) : $loop->the_post();

			$check = get_posts('category_name=featured&numberposts=1');
			if ($check[0]-> ID == $post->ID) continue; ?>
			
			<a href="<?php the_permalink(); ?>" class="item-link isotope-item">
				<article class="feed-item featured-story  <?php the_field('isotope_size') ?>">
					<div class="<?php the_field('isotope-view')?>">
						<?php if ( has_post_thumbnail() ) { ?>
							<?php the_post_thumbnail('full'); ?>
						<?php } ?>
						<h2><?php the_title(); ?></h2>
					<div class="item-description <?php the_field('isotope-mask') ?>">
						<p><?php the_excerpt(); ?></p>
						<div class="byline">
							"Author's Name "
							<span class="btn">Read more...</span>
						</div>
					</div>
					</div>
				</article>
			</a>
			
  <?php endwhile ?>