Walker scored a goal on three shots, added three hits and blocked two shots in Monday's 5-4 shootout win over the Golden Knights.
Walker's point drought reached 14 games when he was limited to three hits in Monday's 4-0 win over the Red Wings.
Walker scored a goal on his only shot in 10:49 of ice time Thursday in a 3-2 shootout win over San Jose.
Walker scored his first goal of the season in Thursday's 2-1 loss to the Flyers.
Walker had a goal and an assist in Sunday's 4-1 win over the Kraken.
Walker tallied a goal and an assist in Tuesday's 4-3 loss to the Avalanche.
Walker scored a goal and dished out three hits in Sunday's 7-2 win over the Canadiens.
Walker signed a two-year, $1.55 million contract extension with the Blues on Tuesday.
Walker was brought up from AHL Springfield on Monday.
Walker was waived by St. Louis on Sunday, Chris Johnston of TSN reports.