I must admit I missed the 1st 30 mins (though doesn't sound like I missed much!)
So based on that I'd say
Bellerin
Wilshere
Walcott
I know Walcott replaced Wilshere and neither played a full match, but all our dangerous play came down the right, and they were the only ones (with Bellerin) who either got beyond the defence, or dragged the defence inwards to give space to Bellerin. Gibbs was disappointingly anonymous. But Kos and Merts played well (mostly), recycling the ball quickly and ensuring new attacks started before Sunderland could reset.