During the 2015 Super Rugby season, the Waratahs campaign to retain their title started with a 25–13 loss to the Western Force in Sydney, which was later followed by a second loss to the Force in Round 13, losing 18–11 in Perth. Cheika led the Waratahs to a 29–24 win over the eventual New Zealand conference winners the Hurricanes in Wellington, and a 32–22 win over the Crusaders in Sydney. Across the 16 matches of the 2015 regular season the Waratahs conceded 11 yellow cards. Two players, Will Skelton and Tolu Latu, were suspended from playing during the latter stages of the tournament leading to Cheika's tactics being questioned. The Waratahs had lost to the Highlanders 26–19 in Dunedin in Round 5 and were defeated by them again in the semifinal in Sydney by 35–17. It was a surprise for some how well the Waratahs did, considering the team had to play for 10 consecutive weeks between their second bye and the knock out stage, which included their two away matches against South Africa opposition.