The Steelers got their final draft pick signed, agreeing to terms with first-round pick David DeCastro on a four-year deal worth just over $7.8 million.
The deal includes a team option for a fifth season.
Getting the deal finished with DeCastro prior to the opening of training camp Wednesday was important for the Steelers, who expect the former Stanford All-America guard to compete for a starting spot this season.
His signing leaves Mike Wallace as the only player not currently under contract. Wallace still has a $2.7 offer on the table as a restricted free agent, but has yet to sign it.
Negotiations are ongoing.