The Saints signed Walsh to their practice squad Monday, Tom Pelissero of NFL Network reports.
Walsh hasn't appeared in an NFL game since 2017, a season in which he made 21 of 29 field-goal attempts. The kicker will join the Saints as a contingency plan in case any COVID issues arise. Wil Lutz is expected to continue as the starting kicker for Sunday's NFC divisional-round matchup against Tampa Bay.