It was third time unlucky for utility forward Simon Grix after he was left out of the Warrington team for Saturday's Carnegie Challenge Cup final against Leeds.
The 26-year-old Grix, who also missed the Wolves' 2009 and 2010 Wembley victories, has played in Warrington's last four Super League matches but lost out to Tyrone McCarthy when coach Tony Smith finalised his line-up on Friday afternoon.
"He's taken it really well," Smith said pitchside following Warrington's traditional pre-final walkabout. "It's a tough call. This is his third miss for us and our thoughts go out for him. He realises he hasn't quite hit the form needed since his return from injury. He's 18th man and willing to contribute as best he can and be prepared for anything that might eventuate before kick-off."
The 24-year-old McCarthy will be making his second Wembley appearance after being a shock selection for the 2009 win over Huddersfield.
Smith added: "The first time around when he got the jersey out of the blue for his third ever game was probably down to injury but this time he's earned his spot. He's been in great form for the last six or eight weeks. He's back it up every time he's been given the nod. He deserves his chance."
McCarthy said: "It's a real good squad so it was always going to be unlucky for some lads who were going to miss out."
Warrington made history on Friday when they became the first team to hold a training session on the pitch after the Wembley authorities relaxed their previous tight regulations.
"I was told it was available to us to do that and in the past we have always just had a walkabout on the field, so why not," Smith said.
"They were kind enough to let us have a team run on it. It was pretty much our usual session but it was nice to do it in a fantastic environment.
"Familiarising yourself with the stadium and ground you are about to play on certainly helps as well. Just walking into stadium the creates a buzz. Even the people who have been here a few times appreciate it and for the ones who haven't been here before it's a great experience. It settles a few butterflies for them as well."
- Simon Grix