Lomax, who last played the 15-man game as a child, signed a two-year deal with the Perth-based Force last month after the rebel R360 competition was delayed for a year.
The 26-year-old, who is expected to play winger or centre, was named as a replacement for the outside backs on a bench also featuring highly experienced former Wallabies flyhalf Kurtley Beale.
Irish flanker Jack Daly will start at openside on his debut for the struggling Force, who will be looking for only a second win in their seventh match of the campaign at Brisbane's Lang Park on Saturday.
Wallabies winger Dylan Pietsch was named to play his first match of the season after recovering from a foot problem but fellow test players Jeremy Williams (concussion) and Carlo Tizzano (knee) miss out because of injury.
The fourth-placed Reds have recalled Australia flyhalf Carter Gordon after he missed last week's 52-14 humbling at the hands of the Wellington Hurricanes with a lower leg injury.
He will be partnered by test scrumhalf Kalani Thomas, while exciting teenage talent Treyvon Pritchard makes his first Super Rugby start on the left wing.
A victory for the Reds would move them above the inactive ACT Brumbies into third place in the standings.tafp