Yeaman feared he might miss out after suffering a side strain that forced him off the field during the victory at Widnes last Sunday. The centre has a key role at Huddersfield in marking Saints' Jamie Lyon.
John Kear has been able to name a full-strength squad, apart from the long-term absentee Peter Lupton, and Nathan Blacklock, who has not recovered from a knee injury. Shaun Briscoe has recovered from his knee injury and is fit to play, along with the forwards Paul King and Shayne McMenemy, who were rested at Widnes.
Leeds, who play Toulouse in the second semi-final also at Huddersfield on Sunday, will stage a cross-code double-header when they meet London Broncos next month. The Rhinos' dual-code venue has been an influence on the Broncos' decision to merge with Harlequins next season and they are to use the Leeds Tykes' pre-season friendly against Edinburgh as their curtain-raiser on 13 August.
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