He played college baseball at Dallas Baptist University, where Krizan was named a First-Team All-American in his senior season.

[10] He batted .413/.498/.700, leading Division I independents in slugging percentage, doubles, home runs (10), RBIs (81), and OPS (1.199).

He played for the Lakeland Flying Tigers of the High-A Florida State League in 2013, hitting 4 home runs with 52 RBI to go along with a .288/.388/.396 slash.

He spent the 2017 season split between Toledo and Erie, hitting .281/.351/.417 with 8 home runs and 51 RBI in 121 games between the two affiliates.

[27] He split the 2019 season between the Double-A Binghamton Rumble Ponies and the Triple-A Syracuse Mets, accumulating a .275/.358/.469 slash with a career-high 14 home runs and 65 RBI.

On December 12, 2019, the Oakland Athletics selected Krizan from the Mets in the minor league phase of the Rule 5 draft.

[31] He spent the 2021 campaign with the Triple-A Sacramento River Cats, batting .316/.367/.492 with career-highs in home runs (16) and RBI (73) in 110 games for the team.

[32] On December 13, Krizan re-signed with the Giants on a new minor league contract, and later received an invitation to spring training.

On April 29, 2022, Krizan was selected to the 40-man roster and promoted to the major leagues for the first time after Brandon Belt and Dominic Leone were placed on the COVID injured list.

[39] On January 31, 2023, Krizan was named the hitting coach of the Winston-Salem Dash, the High-A affiliate of the Chicago White Sox.