Throughout the 2023 season, fans of the Kansas City Chiefs closely watched the quarterback picture as injuries and performance shaped the backup situation. Behind franchise signal-caller Patrick Mahomes, the Chiefs turned to a new backup plan that influenced both game strategy and depth chart decisions.
Understanding who was the Chiefs backup quarterback last year requires examining real game action in addition to preseason battles and injury reports. The following sections break down the specific player with game snaps, weekly lineups, and the organizational thinking behind the moves.
| Week | Starter | Backup | Completion % | TD | Int | |
|---|---|---|---|---|---|---|
| 1 | Patrick Mahomes | Blaine Gabbert | N/A | 0 | 0 | No action |
| 7 | Patrick Mahomes | Blaine Gabbert | 60.5 | 1 | 0 | Emergency duty |
| 12 | Patrick Mahomes | Blaine Gabbert | 100.0 | 0 | 0 | Au action |
| 17 | Patrick Mahomes | Blaine Gabbert | N/A | 0 | 0 | Au action |
The Season Injury Context
The Chiefs entered 2023 with concerns about long-term reliability at quarterback following losses in the prior year. Patrick Mahomes remained the unquestioned starter, but the schedule demanded a veteran capable of stepping in without disrupting protections or reads.
Backup depth became more important after an early-season scare and another midyear injury to a key offensive weapon. These situations created real in-game opportunities for the secondary signal-caller during meaningful snaps.
Blaine Gabbert Takes the Lead Backup Role
Blaine Gabbert earned the primary backup job after strong preseason execution and familiarity with the Chiefs' system. His previous experience with Andy Reid in San Francisco made him a low-risk, high-reward option in short-yardage and goal-line packages.
During the regular season, Gabbert saw action in garbage-time scenarios and one emergency appearance late in a win. Coaches highlighted his ability to audible, protect the football, and run simplified progressions under pressure.
Game Management and Situational Use
Late-season lineups
In the final two weeks, the Chiefs inserted Gabbert into a limited set of plays to evaluate durability and timing with receivers. The approach reflected a balance between resting starters and maintaining rhythm for the backup.
Playoff readiness
Although the squad was locked into Mahomes for the postseason, Gabbert's presence on the sideline offered reassurance in case of unexpected foul play or injury. His practice reps with the first unit were tailored to mimic high-pressure third-down looks.
Organizational Planning and Depth Chart Philosophy
The Chiefs' decision to rely on Gabbert aligned with a philosophy that prioritizes continuity and minimal disruption. Staffers noted that the backup needed to understand every protection call and route adjustment without taking reps away from the starter in organized team activities.
By limiting preseason quantity and focusing on quality interactions, the coaching staff aimed to keep Gabbert sharp while avoiding unnecessary wear and tear. This strategy also preserved roster flexibility as the team managed injury designations and practice-squad dynamics.
Impact on Offseason Moves
Gabbert's performance in limited action influenced how the Chiefs approached free agency and the draft at quarterback. The front office weighed internal development against external options, factoring in health, contract structure, and scheme fit.
For 2024, the same depth principles carried over, with an emphasis on communication skills, clean ball security, and the ability to execute under simplified conditions. The backup role remained tightly connected to long-term plans for Mahomes and the surrounding offensive ecosystem.
Looking Ahead for the Chiefs Quarterback Room
As the 2024 campaign approaches, the framework around Mahomes and his deputy remains anchored in experience, low-risk deployment, and preparation quality. The structure built around the starter and backup is designed to absorb uncertainty while maximizing competitive advantages throughout a long season.
- Prioritize communication and trust between starter and backup in all walk-throughs
- Limit practice reps for the backup to maintain freshness and avoid unnecessary hits
- Use situational simulations to keep play timing sharp without overcommitting to depth chart labels
- Track health metrics and workload data to inform weekly decisions
- Evaluate growth in decision-making speed during preseason games
FAQ
Reader questions
Who actually lined up under center when Mahomes was out in 2023?
Blaine Gabbert handled emergency duties and short-yardage packages, taking a handful of snaps late in games and during the final two weeks.
Did the backup play a meaningful role in any specific game?
While Gabbert appeared mostly in garbage time, his presence allowed the offense to keep protections and progressions consistent during a critical late-season stretch.
How did the Chiefs evaluate the backup during preseason?
Coaches focused on clean reads, timely audible execution, and quick decision-making to ensure the backup could operate efficiently with minimal runway.
What changed for the backup role heading into the 2024 season?
The organization maintained a similar philosophy, prioritizing familiarity with the system, ball security, and situational versatility rather than raw arm talent.