49ers Sign Doug Kramer Jr. as Center Depth Gets Tested

Football Nation
Aug 10
4 min read

Updated: Aug 10

The San Francisco 49ers added a healthy interior offensive lineman before one of their most demanding weeks of training camp. San Francisco signed center Doug Kramer Jr. to a one year contract Monday, August 10, and released offensive lineman Nick Zakelj to open the roster spot.

Those are the confirmed transactions. Kramer arrives with 18 regular season appearances, all with Chicago, while Zakelj leaves after four years in the 49ers organization. The move comes one day before San Francisco hosts Tennessee for a joint practice and three days before the teams meet in the preseason opener.

The timing explains the urgency. Local reporting says Zakelj had missed recent practice time with an elbow issue, while Carver Willis and Brett Toth were in concussion protocol. San Francisco needed an available center who could immediately take repetitions and protect the rest of the group from an excessive workload.

What San Francisco added in Doug Kramer

Kramer, 28, entered the NFL as Chicago’s sixth round selection in 2022 after playing at Illinois. He is listed around 6 feet 2 inches and 300 pounds. He did not start a regular season game for the Bears, but he appeared in 16 games during the 2024 season and gained experience as a reserve center, special teams blocker and occasional fullback in heavy personnel.

That profile makes this a depth transaction, not a declaration that San Francisco has found a new starter. Kramer’s immediate job is to stabilize practice. He must learn the terminology, deliver clean shotgun and under center snaps and communicate protection calls with guards who have already spent weeks together.

Zakelj’s release is notable because the 49ers signed him to a one year extension in February. The former 2022 sixth round pick appeared in 29 games with two starts across four seasons. Availability appears to have become the decisive issue, but the team has not publicly described the move as a final judgment on his entire tenure.

Kramer, 28, entered the NFL as Chicago’s sixth round selection in 2022 after playing at Illinois. He is listed around 6 feet 2 inches and 300 pounds. He did not start a regular season game for the Bears, but he appeared in 16 games during the 2024 season and gained experience as a reserve center, special teams blocker and occasional fullback in heavy personnel.

Football Nation analysis: why center depth matters now

Center is one of the hardest positions to patch together during a live practice. A reserve tackle can often survive by narrowing his assignment and leaning on help from a tight end. A center touches the ball on every offensive snap, identifies pressure, confirms the protection and coordinates combination blocks with both guards.

That is why a short injury cluster can disrupt more than one position. If a healthy guard must move to center, the offense creates a second vacancy. If a starter takes extra work to compensate, the club increases his exposure before the games matter. Kramer gives the 49ers a way to keep the line organized while the medical picture develops.

His history also offers a small tactical bonus. Chicago used Kramer as a fullback in jumbo packages during 2024. The video below shows him leading through the hole on Roschon Johnson’s touchdown against the Rams. It is historical Bears footage, not current San Francisco practice, and it does not predict a 49ers role. It does demonstrate the movement and contact willingness that can make a backup center useful beyond emergency snaps.

Kyle Shanahan values personnel groups that can present several possibilities without substituting. An interior lineman who can report eligible, align in the backfield or function as a sixth blocker can help disguise a short yardage call. Kramer must first prove he can execute the center responsibilities, but that older film explains an additional tool on his résumé.

The Nick Zakelj decision

San Francisco’s willingness to release Zakelj only months after extending him illustrates how quickly a camp depth chart can change. His familiarity with the system had value, and his 29 game history was greater than Kramer’s. But a reserve who cannot currently practice does not solve an immediate repetition problem.

The 49ers also may be prioritizing a truer center profile. Zakelj entered the league as a tackle and developed inside, while Kramer has spent his professional career centered on the middle of the formation. During an injury squeeze, specialized snap experience can outweigh broader long term familiarity.

What Tuesday’s Titans practice must reveal

The joint session with Tennessee on August 11 gives coaches a better evaluation environment than a normal installation period. Kramer will face unfamiliar fronts, louder communication and defenders who do not know the offense’s practice rhythm. Every clean exchange and correctly identified pressure will matter more than a highlight block.

The first checkpoint is assignment security. Can Kramer get the ball delivered accurately, reach the correct landmark and keep the interior from producing free runners? The second is recovery. A newcomer will make mistakes. Coaches need to see whether he can diagnose the problem, absorb the correction and execute the next rep.

The preseason game on Thursday, August 13, should provide the next layer of evidence. Kramer’s snap count, position usage and work with different guards will show whether San Francisco views him only as a temporary healthy body or as a legitimate candidate for the final roster.

Football Nation analysis: the signing does not change the 49ers’ offensive ceiling, but it can protect the floor of an injury tested unit. Center depth is invisible until the exchange, protection call or combination block fails. Adding Kramer before live work with Tennessee is a practical attempt to prevent those failures from controlling the week.