You have to go down to No. 21 to find Willie Mason in the Cowboys squad to tackle the Titans in an NRL pre-season trial at Darwin's Richardson Park on Saturday.

Mason's name is the last to appear on coach Neil Henry's team list as he battles to win a place in the Cowboys 17-man squad to kick off the season against Brisbane at Suncorp Stadium next month.

The former Roosters forward struggled with his fitness and the north Queensland humidity in his first hit-out for the Cowboys in miserable conditions in Cairns last week.

Steamy Darwin won't be any easier for the 115kg prop, still off the pace physically.

But it's another opportunity for him to get some more match fitness and spend playing time alongside Johnathan Thurston against quality opposition.

Brisbane coach Ivan Henjak meanwhile will give winger Antonio Winterstein, youngster Gerard Beale and bench bolter Matt Gillett their chance to impress in a trial against Queensland Cup side Redcliffe on Saturday night.

Winterstein, who played in almost every game last season, hasn't been sighted in the trials.

With teenager Josh Hoffman still recovering from an ankle sprain exciting youngster Corey Norman gets another opportunity to push for the fullback job vacated by Karmichael Hunt.

Norman caught the eye last weekend against Canberra, scoring a try and producing a clever flick pass for makeshift centre Ben Te'o to score.

It was an impressive showing by the recently-turned 18 year-old who can put some serious pressure on Henjak with another impressive game against the Dolphins.

Representative halves Darren Lockyer and Peter Wallace will make their first appearance together after missing Brisbane's two earlier trial wins.

Lockyer, who has fully recovered from a biceps injury, is keen to play the 80 minutes while Wallace may only get 40 minutes following some hamstring issues.

Brisbane's pack will be boosted by the return of prop Nick Kenny who missed the win over Canberra with an minor ankle injury.

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