Adelaide coach Brenton Sanderson faces a matter of trust with struggling Crows A frustrated Brenton Sanderson during Adelaide's 77-point loss to Sydney on Saturday. BRENTON Sanderson this week is facing the biggest challenge of his 36-game coaching career - deciding which Crows he can trust. Adelaide's selection this week becomes about a statement of rebuke against the players who failed in the Crows' biggest loss of the Sanderson era, a 77-point home defeat to Sydney. "On what we saw last night, you'd look at dropping 10 players, because a lot did not hold up or get close to capacity," assistant coach Mark Bickley said yesterday. But the reality is Sanderson cannot make so many changes, forcing him to reveal the players he trusts for a response against finals contender Richmond at the MCG on Saturday. Bickley, who was left to hold together the Crows as the interim coach after their last major hiding in 2011, also noted "the players outside the 22 have to be in better form than those inside." "You don't lose form in one week," Bickley said. But, to use Sanderson's caustic post-game words, one "insipid, embarrassing and unacceptable" display against the Swans could be enough to force a major rethink of the player list at West Lakes. "We will keep picking the players who want to stand up," Sanderson said. We learned a bit today about a couple of guys. We know the guys who want to fight - and we will keep putting in players who deserve their opportunity. If they are not giving us what we need consistently, we will have to let them out. The preparation for a shake-up at selection was evident yesterday when Adelaide withdrew midfielders Matthew Wright and Jarryd Lyons from today's North Adelaide and Glenelg line-ups. This is to avoid having the duo on a five-day turnaround from the SANFL to the AFL this week. Adelaide has increased injury concerns with forward Jared Petrenko needing scans to assess suspected damage to his right AC joint, lead ruckman Sam Jacobs taking a bad knock to his right knee and midfielder David Mackay failing to overcome a hip injury before the game. Sanderson used his most-emotive language in a post-game analysis on Saturday when Adelaide remained outside the top eight with a 5-6 win-loss record and lost its fifth of seven games at AAMI Stadium. Sanderson also issued a promise that adds the pressure on his players to respond. "We were embarrassed actually, on our home deck," he said while labelling Adelaide's display against the Swans as that of a "bottom-four" side. It was an unacceptable performance right across the board and it won't happen again. Adelaide is faced with winning at least seven of its remaining 11 home-and-away games to qualify for consecutive finals series. "We're not going to roll over and die," Sanderson said. We have to win seven of 11 - and it starts with Richmond.