UCF's spring football practice begins tomorrow and there will be plenty of storylines to keep an eye on as the practices unfold.

We'll preview those top five angles in tomorrow's paper, but today let's take a look at five key up-and-comers this spring who could win a starting job or play a significant role next season. While there will be plenty of newcomers in the summer who will challenge on the depth chart, this spring does have some players capable of winning a job going into the start of camp.

Jackie Williams, WR, Sr. - The transfer from UAB had to sit out last season after joining the Knights due to NCAA rules, but he will step right into the role vacated by Jeff Godfrey. In a deep receiving corps -- Josh Reese, Breshad Perriman, Rannell Hall and J.J. Worton return -- there might appear to be little space for an impact player, but Williams will have every opportunity to become a starter.

The 5-feet-11, 190-pound Williams left the Blazers ranked fourth all-time with 140 career receptions and fourth with 1,733 receiving yards despite playing just three seasons, and he impressed coaches at UCF with his route-running, speed and ability right away upon joining practice. Williams will get every chance to step into the WildKnight role and could become a focal point of the offense out of the slot.

After working on the scout team all of last season, it's finally time to see Williams with the starting group.

Michael Campbell, OT, RS Soph. - Offensive line will be one of the most critical areas to watch this spring as the Knights look to replace three starters: Jordan McCray, Justin McCray and Chris Martin. Campbell has been a player coaches have watched develop over the last two seasons behind Torrian Wilson, and now may be the time for the young lineman to step into a starting role.

The biggest area of concern with Campbell had been his size. Coaches wanted the Pensacola Pace product to add some weight to his 6-feet-5 frame. Campbell did so over the last season, and he'll come into camp somewhere larger than the 273 pounds at which he was listed during this past season. With that added bulk, Campbell has the potential to be one of the more athletic linemen on the field for the Knights, and he's a player whose name will be bounced around often in the first few weeks as a potential anchor for UCF's offensive line this season and for the new few years.

Chester Brown, OT, RS Soph. - Like Campbell, Brown will be a crucial piece as UCF looks to rebuild its offensive line. Moved over from defensive tackle to the position he played in high school, Brown is potentially the most athletic player on the offensive line for the Knights. Listed at 6-foot-4, 308-pounds, (he certainly looks taller), Brown had coaches drooling over his potential when he made the switch to offensive line last season.

For Brent Key, harnessing that talent and getting it game ready has been the big challenge. Now, Brown will have an opportunity to show how far along he's come in understanding the nuances of the position and turning his raw athleticism and power into technique and effectiveness on the edge of the offensive line.

If he can make the transition this spring, Brown may turn into the most coveted NFL prospect on the line by the time he leaves UCF.

Justin McDonald, LB, Soph. - At the end of last season, as UCF continued to cycle through injured players and look to plug holes in the defense, it was McDonald who seized the moment.

Moved down from safety to linebacker, McDonald showed his football instincts were strong enough to make an impact right away on the college level. Despite not practicing at linebacker for most of the season and even with the mental errors that were bound to happen, McDonald showed he simply has a knack for being around the ball and making plays. Now it's a matter of turning those instincts into consistency.

With Willie Mitchell back in the fold, McDonald will have to fight off the more experienced linebacker for the starting Will spot. For now, though, his longer frame and speed gives McDonald the chance to be the exact type of linebacker UCF would like to start on Saturdays. Listed at 6-2, 197, McDonald likely added some weight during the offseason and his development at linebacker could be crucial to UCF's improvement at the position -- especially with potential starters (junior college recruit Errol Clarke) arriving in the summer.