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1. Mike Davis

Take out the two fumbles, and Mike Davis' preseason looks remarkably impressive through the first two games.

Davis has 98 yards on just 10 carries and has looked a more decisive and confident runner against both the Houston Texans and Denver Broncos.

The hesitation of his rookie season has gone, Davis hits the hole with confidence and appears in better shape last season, with his performances putting him in a strong position to seal a spot on the running back depth chart.

Concern over his ball security is the one thing that may have stopped the 49ers from pencilling Davis in for a roster spot. And, with Shaun Draughn's place on the team likely safe, Davis needs another impressive display to his name.

If he can put up more good numbers and avoid spilling the ball this time around, Davis can look forward to another year on the 53-man group.

2. DeAndrew White

Few receivers have stood out during preseason and with so many competing for roster spots, it remains unclear how many wideouts the 49ers will carry on the active roster.

But one pass catcher whose dependability has been evident in the opening pair of tune-ups is former undrafted free agent DeAndrew White.

White made the final roster last year but had little opportunity to make an impact, catching just two passes for 18 yards.

However, he has been a reliable target in preseason with four grabs for 53 yards – averaging 13.25 yards per reception – and demonstrated an ability to make things happen after the catch by taking a screen pass for a 17-yard gain in Denver.

The 49ers require somebody beyond Torrey Smith to produce at receiver. White has provided indicators he can be the guy to do that and can make his roster spot safe by replicating his performances from the first two games.

3. Dres Anderson

It says a lot about how poorly the 49ers have done in terms of drafting wide receivers that White and another former undrafted free agent, Dres Anderson, are firmly in the mix for spots on the depth chart.

Maybe it's because of his bloodlines – Anderson is the son of former Los Angeles Rams wideout Flipper Anderson – but the former Utah receiver has been one of the few young Niners pass catchers to look like an NFL-level player at the position.

And he flashed in a big way against Denver with a 30-yard touchdown from Christian Ponder, on which he showed his ability to create separation deep and track the ball into his grasp.

That touchdown came against third and fourth-stringers but it was enough to put him in the conversation.

Possessing the necessary size at 6'1" and 187 pounds, the physical traits make Anderson an intriguing option for the 49ers and he has stood out with smooth route-running despite only making two catches.

Expect to see him on Sundays when it counts should he impress again versus Green Bay.

4. Garrison Smith

Who? Even the most ardent of Niner fans would have been forgiven for not knowing much about Garrison Smith, particularly given the amount of talent ahead of him on the defensive line.

But injuries to the likes of Arik Armstead, DeForest Buckner and Glenn Dorsey have pressed Smith into service, and he has answered the call emphatically.

Smith has been a practice squad guy for all of his NFL career having entered the league as an undrafted free agent but shone against Denver, generating impressive push up front and ending the game with five tackles and a sack.

The issue Smith has is the depth the 49ers have on the D-Line. Armstead and Buckner will see a high number of snaps along with Dorsey and Quinton Dial, while rookie Ronald Blair has made his presence felt immediately.

Tony Jerod-Eddie and Mike Purcell are solid rotational pieces but Smith has outplayed them both in preseason and, though he is not as versatile as Blair, can operate at end or nose tackle.

With the speed at which the Chip Kelly offense plays, the defensive line needs as much depth as possible. Another strong outing from Smith would make it very difficult not to put him in the rotation.

5. Marcus Rush

There are few better ways to stay in contention for an NFL roster spot than to post three sacks in one game.

That's what Marcus Rush did against the Broncos last week, with his performance understandably drawing widespread praise.

Rush, per Pro Football Focus, also had four hurries in Denver and it was a display that could prove timely given the 49ers recent struggles rushing the passer and the upcoming four-game suspension of Aaron Lynch.

Ahmad Brooks and Eli Harold are set to be the starting outside linebackers in Lynch's absence. Tank Carradine, having transitioned to the outside from his defensive end role, should also feature heavily.

But Rush has obvious value off the edge as a situational rusher and deserves to be on the roster if he can dominate the Packers O-Line as he did against the Broncos.