[6] Walding made his Major League debut on May 30, 2018, against the Los Angeles Dodgers, going hitless in all four at–bats with four strikeouts.

[14][15] Additionally, he became the only position player in Major League history to come to bat more than four times to start his career with each at bat ending in a strikeout and joined relief pitcher Logan Ondrusek, who is the only other player ever to strike out seven times in their first seven career plate appearances.

[17] Walding began the 2019 season with Lehigh Valley but was recalled by the Phillies on April 20, 2019, following injuries to starting infielders Jean Segura and Scott Kingery.

[18] In 2019 he batted .206/.351/.369 with 62 walks, 11 home runs, 40 RBI, and 130 strikeouts in 282 at–bats for Lehigh Valley, and struck out in both at-bats for the Phillies.

[21] On March 9, 2020, Walding signed a minor league deal with the Toronto Blue Jays.

[23] On February 17, 2021, Walding signed with the High Point Rockers of the Atlantic League of Professional Baseball.

[24] Walding spent the majority of the season with the Triple-A Salt Lake Bees, hitting .238/.326/.451 with six home runs and 25 RBI in 33 games.

[25] On March 9, 2022, Walding signed a minor league deal with the San Diego Padres.

[26] He was assigned to the Double-A San Antonio Missions to begin the year, but limped to a .046/.276/.091 slash in 7 games.