This is a pivotal weekend in the Barclays Premier League with a packed Easter program that sees battles across the table. Here are the six games you cannot afford to miss this weekend: Chelsea vs. Wigan (Saturday, 10 a.m. ET, exclusively on FOX Soccer) WHAT THE GAME IS: Whatever they’re putting into the halftime tea in the Chelsea dressing room is working. Tottenham might be five points in the distance, but the Blues will chase them all the way for fourth. Wigan are involved in their annual Houdini act. Three weeks ago, they were dead and buried. After two wins on the bounce, Roberto Martinez is finding his mojo at the perfect time. WHOM TO WATCH: How old do you reckon John Obi Mikel is? He’s been around so long that we think of him as a grizzled veteran. He’s actually only 24. His trouble has been getting a coach to actually trust in his talent, and as a result, his Chelsea career has been stop-start. With Roberto Di Matteo, Mikel looks like he’s finally found someone who believes in him. Over the next seven matches, Ali Al Habsi is going to be the most important player on the Latics…