So far, three players stick out as potential pro bowlers.
Joey Porter - He is on pace for 61 tackles and 21 sacks. Lets face it though, 21 sacks is a very long shot. 15 sacks though? I think that is very much a possibility. For those worrying about his tackle total, he had 53 tackles in 04' and 56 tackles in 05', both Pro Bowl seasons. I don't think tackles will really matter though if he has 15+ sacks. If he can continue to play at the high level he has through 5 games, he is a lock for the Pro Bowl.
Ronnie Brown - He is on pace for 1,075 yards rushing and 22 touchdowns. Throw in that he is also on pace for 342 yards receiving. If he reaches those stats, he makes the Pro Bowl hands down. However, like Porter, I doubt that he puts up those amazing numbers. I think by the end of the season(if he stays healthy), he will put up over 1,100 yards rushing and have around 16 rushing touchdowns. Another big factor is that he is averaging 4.7 yards per carry. A key for Pro Bowl voting is, does the player make an significant impact on your team. Ronnie has carried the offense so far, so yes, he does make a big impact. Some may say that 1,100 yards rushing is not enough for a running back, HOWEVER, his touchdown total and impact in the offense will push him through. Marion Barber made the Pro Bowl last year and failed to rush for over 1,000 yards.
Chad Pennington - Thats right, I said it. CHAD PENNINGTON. He isn't a super star QB who can torch you for 6 touchdowns in one game, but he is a consistent QB who rarely makes a critical mistake. He is on pace for 3,523 yards passing, 16 touchdowns and only 6 interceptions. He is also completing 69% of his passing and has a QB rating of 98.9. Now, I wouldn't consider him a guy that should be a "lock" but he is someone I think should get consideration(if he keeps performing at the same level all year and remains healthy) for like the 3rd QB spot on the roster, or at the very least be a first alternate if an injury occurs to one of the three who do make it.
Keep an eye on those three, as I believe they have the BEST shot as of this point in the season.
Some other guys who could mentioned more as the season goes on:
Anthony Fasano
Jake Long
Vernon Carey
Channing Crowder
Will Allen