Chargers vs. 49ers preseason 2013: Who to watch in the fourth quarter?

Tomorrow night, the San Diego Chargers and the San Francisco 49ers wrap up their respective preseasons against each other. The starters either won't play or will play very little. It will be, for all intents and purposes, a very boring game unless you're aware of what to be looking for.

I spoke with David Fucillo from Niners Nation this morning, and both of us came up with three players from the teams that we cover that fans should be keeping an eye on in the fourth quarter. Here's his list:

Chuck Jacobs, wide receiver, No. 1

The 49ers rookie wide receiver has been a frequent target in the fourth quarter, and is a strong practice squad candidate. he had four catches in the first two games, before going catch-less this past week. Look for him to get a few targets from rookie QB B.J. Daniels as both try and prove something.

B.J. Daniels, quarterback, No. 5

He is battling veteran Seneca Wallace for the third QB spot. Daniels was a seventh round pick this year, and during the offseason workout program, he was actually getting practice time at running back, wide receiver and special teams. He still does special teams work, but the team boosted his QB reps following a strong performance against the Chiefs in the 49ers second preseason game. He has shown athleticism, a strong arm and great touch this preseason.

Nick Moody, linebacker, No. 54

The 49ers sixth round pick is looking like a prime candidate for special teams duty, but he has shown a lot as an inside linebacker as well. He has a nose for the ball, and is a pretty big hitter. He should get extensive playing time this week.

The San Diego Chargers have plenty of players on the bubble for Saturday's big roster cut, and most of them will see lots of action in the second half against the Niners.

Brad Sorensen, quarterback, No. 4

If the Chargers keep three quarterbacks on the roster, Sorensen is the third guy. If they're going to keep three quarterbacks, Soresen is going to need to prove that he could potentially be a backup or future starter in the league. He's mostly done that with an impressive preseason, but I think he'll get his biggest and longest audition tomorrow night against San Francisco.

Tourek Williams, outside linebacker/defensive end, No. 58

Williams was San Diego's sixth round selection in the 2013 NFL Draft, but he's somewhat of an odd fit for this 3-4 defense. He's too small to play defensive end and not good enough in coverage to play outside linebacker. Many thought that he would be a pass-rush specialist out of the nickel defense, which typically uses four defensive linemen instead of three, but we haven't seen much in the way of pass rushing abilities so far. Plain and simple, Williams needs a sack in this game to stand a chance of making the 53-man roster.

Robert Meachem, wide receiver, No. 12

Yes, the same Robert Meachem that was once viewed as a viable replacement for Vincent Jackson. He will be playing in the fourth quarter of this game just as he has been in the fourth quarter of every preseason game so far this year for the Chargers. The team would actually save a good amount of cap space by keeping him on the roster, but cutting him would free up a lot of cap space for next season. Meachem needs an outstanding game, with at least one touchdown (or possibly an injury to another wide receiver that sits above him on the depth chart), for Chargers GM Tom Telesco to let him stay in San Diego this season.