Manly-Warringah's 2011 season started with an 18–6 loss to the Melbourne Storm in Melbourne. Brett Stewart had minimal impact on the match but escaped injury-free. This was followed with an upset 27–16 win over beaten 2010 Grand Finalists the Sydney Roosters, where Manly-Warringah went into the match without its captain Jamie Lyon, Shane Rodney, Dean Whare and Glenn Stewart through injury and also Jason King and Steve Matai through suspension. Brett Stewart was appointed acting captain for the Roosters match. This is regarded as one of the most commendable wins in Manly's history and featured outstanding performances by its younger players including Kieran Foran, Jamie Buhrer, William Hopoate and Vic Mauro. This was followed up with a 26–12 win over the Newcastle Knights at Brookvale, before a 32–20 loss to the South Sydney Rabbitohs which ended Manly's unbeaten run at Bluetongue Stadium, having won all of its previous matches at the venue.