The 49ers found a potential starter in Marcus Martin with their third-round pick.
Martin, an interior offensive lineman from USC, started 20 games at left guard and started his final 13 games at center for the Trojans in his three collegiate season. He was the second center taken in the draft.
The 49ers elected not to bring back their starting center from the previous three seasons, Jonathan Goodwin, and gave Daniel Kilgore a three-year extension this offseason. Kilgore was the favorite to land the starting job at center, but Martin will give a run for the spot in training camp.
"I'm going to do whatever the coaches ask me to do. Whatever position they need me to play I'm going to be willing to play," Martin said. "I'm going to come in and compete an represent my organization the best way I can."
Martin will also be a potential option at left guard going forward with Mike Iupati's future with the team up in the air. Iupati is entering a contract year and could garner franchise-type money on the open market, which the 49ers appear unlikely to pay. They also traded for a former second-round pick Jonathan Martin to become a backup tackle behind Joe Staley and Anthony Davis.
Martin didn't participate in the combine because of a knee injury, but says he's 100 percent and will be ready for the start of the team's program once he arrives in Santa Clara.
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