Cody Walker injured his groin in South Sydney's 36-12 loss to the Raiders, who celebrated Josh Papalii's milestone.
South Sydney five-eighth Cody Walker suffered a fresh injury blow in his side's heavy defeat to the Raiders on Sunday, hurting his groin in his return from a five-game stint on the sidelines.
Walker limped off with a groin injury in the 57th minute of the clash in Canberra, won by the hosts 36-12 as Josh Papalii played his 319th NRL game to become the most capped Raider of all time.
On a fairytale afternoon for Papalii and the Raiders faithful, "Big Papa" barged over for two tries late in the final 10 minutes of the game.