The San Francisco 49ers face off against the St. Louis Rams on Monday Night Football this week, which means we will not have the first practice participation report until Thursday afternoon. With that in mind, I thought I would put together a sort of injury report preview. The idea will be to look back at Week 5 injuries and the Week 5 pre-game injury report to see what we might expect heading into this weekend. The pre-game injury report are listed in order of doubtful, questionable and probable from last week. I took a look at NFI and PUP players yesterday.

Week 5 injuries

Joe Staley (leg): The 49ers left tackle left Sunday's game for one play. There was some discussion that he might be working on his ankle. A week earlier he left the Eagles game with what appeared to be some cramps. In that instance, he also returned after missing one play. During his brief absence each time, Alex Boone moved to left tackle, and Joe Looney moved in at right guard

Week 6: He is unlikely to show up on the injury report, and if he does, it will be as "full participation".

Nick Moody (hamstring): The 49ers special teamer suffered a hamstring injury, and I don't believe he returned to the game. The 49ers signed Bubba Ventrone this week, so it is possible it is related to this injury. However, the 49ers special teams coverage units have been a bit inconsistent this season, so it is possible the 49ers are just looking for some additional help for that group.

Week 6: I think he ends up on the injury report, but we have no idea to what level that will be.

Week 5 pre-game injury report

C Marcus Martin (knee): Participated in practice last week for the first time since his knee injury. He was listed as limited all three days, and was "doubtful" on the final report. That is an upgrade from previous weeks in which he was listed as "out" heading into the weekend. We've got some discussion from socalisteph on his medical status.

Week 6: He'll be on the injury report again, likely as a limited participant throughout the week. I imagine he will be doubtful again, but maybe we see him climb up to questionable.

CB Tramaine Brock (toe): Still dealing with a turf toe injury. He has sat out practice every week since injuring his toe in Week 1. He returned to on-field rehab work, which appears to be a step forward.

Week 6: I would not be surprised if we saw him listed as limited. He will once again be questionable, and I don't think he plays this week, but he is making progress. The 49ers have a bye after their Week 7 game with the Denver Broncos, so maybe the 49ers just hold him out through the bye.

T Anthony Davis (knee, ankle): Suffered a lower leg injury in Week 4 when Colin Kaepernick was sacked into the back of his leg. He is listed as having a knee and ankle injury, but all reports have focused on the knee issue. He did not practice last week, and missed the game after being listed as questionable. Davis said on Wednesday that it was an MCL sprain.

Week 6: As discussed earlier today, there is a good chance Davis sits out this week, and potentially is not back until after the 49ers Week 8 bye.

TE Vernon Davis (back): Took a hit to the back during the team's Week 4 win over the Philadelphia Eagles. He did not practice last week, and after being listed as questionable on Friday said there was a small chance he would play on Sunday. He did not play.

Week 6: My guess is we see him listed as limited in practice throughout this week. I think he plays on Monday, but it will require him getting in some practice. I'm more optimistic about Vernon than Anthony.

TE Vance McDonald (knee): Suffered a knee injury in Week 2, and was subsequently inactive Week 3 and 4. He was limited in practice all last week and was questionable on Friday, but he was active on Sunday.

Week 6: He is likely still to be listed on the injury report, but 49ers fans should expect him to be back on the field once again. The question is how involved he will be in the passing game.

S Eric Reid (hamstring): Suffered a hamstring strain on Darren Sproles punt return touchdown. He came off the field after the play and threw down his helmet, but he was back in the game on the next defensive series. He was listed as limited throughout practice last week and questionable on the final injury report.

Week 6: Reid played last week, so he should be good to go for this week. He will probably be listed on the injury report this week, but he should be probable and play this Monday.

DT Ian Williams (ankle): Added to the Week 5 injury report on Friday. Williams was not listed on Wednesday or Thursday, but then sat out Friday's practice and was listed as questionable. This would indicate a mid-week injury, but he played on Sunday and was generally solid once again.

Week 6: I suppose he could end up on the report once again this week, but he should be good to go to play on Monday.

S Antoine Bethea (ankle): Added to the injury report in Week 4 with an ankle injury. He had practiced Wednesday and Thursday, but like Williams (only a week earlier), he suffered a mid-week injury and was added to the report. He was listed as questionable after sitting out that Friday practice. This past week, he was limited all week and was listed as probable for Week 5.

Week 6: He has played the last two weeks in spite of the injury designation, and I don't expect that to change. He might be listed on the report again this week, but it is only precautionary.

WR Michael Crabtree (foot): A week after a quadricep injury landed Crabtree on the Week 4 injury report, he was listed as a full participant and probable for Week 5 with a foot injury. He suffered the injury during the 49ers Week 4 win over the Eagles, leaving the game in the first quarter. He went to the locker room, returned and played the rest of the game. We had some discussion on this from socalisteph last week.

Week 6: Crabtree was a full participant last week, and should be the same this week, if not removed entirely from the report.

RB Frank Gore (back): Listed as probable each of the last two weeks, and a full participant in practice both weeks. There has been no discussion of the injury, but it is likely just some in-season wear and tear.

Week 6: I suspect we see Gore listed again. Gore was a bit slow to his feet in his final run this past Sunday, so I imagine we once again see him on the injury report. But he'll play on Monday.

DE Tony Jerod-Eddie (shoulder): Listed as limited throughout practice last week, and probable heading into the Chiefs game. There has been no specifics on the injury.

Week 6: He might be listed on the report again, but he will play on Sunday as one of the primary reserves along the defensive line.

P Andy Lee (right ankle): The 49ers punter suffered an ankle injury when his punt attempt was blocked in the end zone by the Eagles. He sat out the team's Wednesday practice last week, but was a full participant on Thursday and Friday.

Week 6: There is a chance the ankle injury keeps him on the injury report for another week, but he could just as well not be listed this week. Either way, he'll be good to go for Week 6.

DE Justin Smith (not injury related): Since Week 2, the 49ers have given Smith each Wednesday off. He returns to practice as a full participant on Thursday and Friday, but the fact that he sits Wednesday means he is listed as probable each week.

Week 6: I suspect he will continue to get the Wednesday off each week through the end of the season. At this point, there are no concerns.