Nelson signed with the Chiefs' practice squad Monday.
Nelson retired from the NFL on Sunday, DJ Bien-Aime of ESPN reports.
Nelson had five tackles, three passes defensed and an 82-yard interception return for a touchdown in Saturday's 45-14 wild-card playoff win over Cleveland.
Nelson (foot/hamstring/hand) is active ahead of Sunday's game against the Titans, Drew Dougherty of the Texans' official site reports.
Nelson has returned to Sunday's game against the Browns, Zac Jackson of The Athletic reports.
Nelson is questionable to return to Sunday's game against the Browns with a foot injury.
Nelson (wrist) is active Sunday against the Titans.
Nelson (wrist) is expected to play Sunday against the Titans, Aaron Wilson of KPRC 2 Houston reports.
Nelson is now questionable for Sunday's game against the Titans with a wrist injury.
Nelson (back) is active Sunday against the Bengals.