Brock (hamstring) is listed as probable for Monday's game against the Vikings, John Dickinson of 95.7 The GAME reports.

EDGE Analysis

Brock was able to get in a full practice Saturday, which sets him up to start Monday in the 49ers' season opener. He will be counted on to be the team's top cornerback in 2015.

Brock (hamstring) who is doubtful for Thursday's final preseason game, is expected to be ready for the 49ers' season opener against the Vikings, CSN Bay Area reports.

EDGE Analysis

Brock only appeared in three games last year dealing with a nagging leg and foot injuries, so it is hard to put faith in him staying healthy this year. He is still expected to start at one of the corner positions once the regular season begins.

Brock played in just three games this season, recording seven tackles (all solo) over that span. Brock had an injury riddled season, dealing with toe and hamstring injuries. He was expected to be a starter coming into training camp, but health issues cost him nearly the entire season. He is still under contract for 2015, and will likely be given another shot to start in a shallow 49ers' secondary.

Brock (hamstring) is inactive for Sunday's game against the Giants. With seven tackles and three games to date, Brock is off the IDP radar in most cases, with his absence more of a hit to the 49ers' cornerback depth.

Brock (hamstring) is questionable for Sunday's game against the Giants. Brock didn't practice all week, so it looks like he might need to sit out yet again. Brock has suited up just three times this year.

Brock (toe) is active for Sunday's game against the Saints. Brock was officially listed as questionable heading into the game after practicing on a limited basis all week, but he was good enough in warmups to play just his third game of the season.

Brock (toe) is questionable for Sunday's game against New Orleans. The 49ers could really use Brock back at corner, and he might be able to make a return Sunday after practicing all week in a limited capacity.

Brock (toe) is inactive for Sunday's game against the Rams. One game removed from making his first appearance since Week 1, Brock's toe is enough of a bother to result in his sixth DNP of the season. As a result, Perrish Cox should again receive significant run at cornerback.

Brock (toe) is questionable for Sunday's game against St. Louis. Brock played against Denver last week, but he didn't quite look right, and it's possible that the 49ers might rest him this week against a St. Louis wideout rotation that just lost lead man Brian Quick (shoulder) for the year.

Brock (toe) returned to the field Sunday and recorded three tackles (all solo) in the loss to Denver. The good news for Brock was that he returned and did not re-aggravate his toe injury that had kept him out since week 1, the bad news is that he was beat deep on a couple of plays. Having Peyton Manning as your first assignment coming off of injury is a tough task, so Brock should have a better week against a weak Rams offense after the bye.