Former England captain Jamie Peacock is tipping Castleford to win the Ladbrokes Challenge Cup but believes newcomers Toronto can pull off a shock or two.
Peacock, who is now head of rugby at Championship club Hull KR, won the Cup with Bradford and Leeds and believes the addition of the Canadian club has added a new dimension to the famous knock-out competition.
The former international rejected an offer to join the Wolfpack, who have won their first two matches in League 1 but face their biggest test yet when they take on London Broncos in the fourth round of the Cup in Ealing on Friday night.
"I think Toronto Wolfpack coming over here and competing in the Ladbrokes Challenge Cup is fantastic for the competition," Peacock told news.ladbrokes.com.
"They're a very ambitious outfit with what they want to achieve and I think they've been a breath of fresh air.
"They're talking up their credentials about promotion and they've got an excellent challenge this weekend against the London Broncos, which will be a good test of where they're at.
"And you know what? I reckon they could spring an upset there this weekend."
Hull KR, who suffered a shock defeat by part-timers Oldham in 2016, are one of 12 Championship teams in action this weekend hoping to go into Tuesday's draw for the fifth round which will include Super League clubs Leeds, Huddersfield, Leigh and Salford.
"The Challenge Cup is more exciting than ever, with Toronto coming in, plus your French teams and the amateur sides," Peacock added. "They all bring something different and it adds to the excitement.
"Of course there's always the chance of an upset which adds to the magic. But who wins it this year? I'm saying Castleford."
