Ty Sambrailo’s elbow injury is worse than originally expected.

When the second-year offensive guard went down with the injury in training camp, the team said he was day-to-day. That designation quickly changed, as coach Gary Kubiak later dubbed him week-to-week.

Now there’s this nugget, from KUSA-TV’s Mike Klis:

Ty Sambrailo [is] not expected to be ready by the season opener in 18 days because of his elbow injury.

It’s an unfortunate development for Sambrailo, who started the first three games of 2015 before going to the team’s injured reserve list with a shoulder injury. Denver can only hope his latest injury woes do not linger deep into the season.

With Sambrailo out, Michael Schofield is penciled in at right guard. Schofield is also the team’s top backup tackle, playing 81 percent of the team’s offensive snaps against the 49ers on Saturday.

To shore up the offensive line, the Broncos may look to outside help. Former Ravens guard/center Ryan Jensen, who has played under coach Gary Kubiak, may be among the potential free agents that Denver will consider.

Broncos notes: The Broncos reached an agreement with free agent defensive lineman Henry Melton on Sunday, but they are yet to officially announce the signing and a corresponding roster move. Offensive lineman Sam Carlson will be cut to make room for Melton, according to Klis.