Defensive back Otha Foster is the 4th member of the Edmonton Eskimos to join the Riders via free agency.
The 6 foot, 205 pound Foster joins Shamawd Chambers, Kendial Lawrence and Andrew Jones to re-join Chris Jones in Regina.
The 27-year-old has spent the last two seasons with the Edmonton Eskimos starting all 33 regular season games played totaling 103 defensive tackles, seven special teams tackles, and two interceptions.
Last season, Foster started 17 regular season games picking up 57 defensive tackles and one interception – which was returned 45 yards for a touchdown. He added four more defensive tackles in the playoffs.