counts down the 15 college football players to watch -- and some other college football topics -- in varying categories in 2015. USC's Tuerk vs. UCLA's Clark: Big battle in trenches Texas Tech's Clark vs. Baylor's Oakman: Grown-man matchup Michigan State's Conklin vs. Ohio State's Bosa: Big Ten brutes Pittsburgh's Boyd vs. Virginia Tech's Fuller: Could be epic duel The Citadel at South Carolina: USC's prep for Clemson Charleston Southern at Alabama: Mid-November Solomon Thomas Jersey tilt Lamar at Baylor: Lamar goes from Bacone to Baylor Incarnate Word at UTEP: Ever hear of Incarnate Word? Alabama at Auburn: Iron Bowl has risen in significance Baylor at TCU: Could have major impact on playoff race Michigan State at Ohio State: Appointment television Arizona at USC: Could decide Pac-12 South winner Cal: QB gives hope Northwestern: Aiming to end bowl absence Oklahoma State: Had 2014 season derailed by TCU Tenne see: Popular pick to make strides in SEC Ohio State: QB decision awaits defending champs Alabama: Tide's front seven loaded with talent USC: Ke sler leads high-powered offense Notre Dame: Special-teams questions facing Irish Leonte Caroo, Rutgers: Clocked in the high 4.3s in the 40 Scooby Wright III, Arizona: Led the nation in TFLs Joey Bosa, Ohio State: Recorded 13.5 sacks last season Nick Chubb, Georgia: Averaged 7.1 yards per carry as freshman Peter Mortell, Minnesota: Among most humorous Twitter feeds Cardale Jones, Ohio State: Got into Twitter spat with NBA star Kahlil McKenzie, Tenne see: Already has a big following Pharoh Cooper, South Carolina: Has must-watch Instagram video Jordan Lomax, Iowa: Sets example on field, in cla sroom Braxton Miller, Ohio State: Opted to remain a Buckeye Scooby Wright III, Arizona: Has unrelenting work ethic Vince Biegel, Wisconsin: Might play with too much of an edge Addison Gillam, Colorado: Active, physical linebacker for Buffs John Taylor Jersey Quin Blanding, Virginia: Best safety in the ACC Leonte Carroo, Rutgers: QB play has hurt overall numbers Jason Spriggs, Indiana: One of two Hoosiers linemen on list Devon Johnson, Marshall: Running back nicknamed "Rockhead" Gunner Kiel, Cincinnati: Starting to live up to the hype Keenan Reynolds, Navy: Could break FBS career rush TD record Taysom Hill, BYU: If healthy, will put up huge numbers Eric Stonestreet: Gets to at least one K-State game a season Ty Burrell: Ducks now exceeding his expectations J.K. Simmons: Grew up wanting to be Buckeyes LB Zach Galifianakis: "A wolf park of one" Auburn: 'Bama fan put Toomer's Corner on hiatus Ohio State: Puts sousaphone player in spotlight Clemson: Touch the rock for good luck Purdue: Ma sive drum is band's lasting symbol Clemson: Run down "The Hill" gets fans fired up Wisconsin: Pregame tailgates among the best Notre Dame: History at place is unparalleled LSU: Night games allows fans to really shine Air Force: One of three service academies on list Notre Dame: "Victory March" dates back to 1908 Michigan: Got high praise from John Philip Sousa USC: Composed in 1922 by a dental student Wisconsin's Camp Randall: "Jump Around" adds to atmosphere Boise State's Albertsons Stadium: Famous for signature blue turf Washington's Husky Stadium: "Sailgate" before the game Rose Bowl: Historic host of "The Granddaddy of Them All" Trevone Boykin, TCU: Effortle sly to ses deep bombs Cardale Jones, Ohio State: Had impre sive throw in spring game Christian Hackenberg, Penn State: Another elite arm in Big Ten Maty Mauk, Mi souri: Probably best arm in the SEC Darien Harris, Michigan State: Bench pre ses double his weight Andrew Billings, Baylor: Staff has to limit him in weight room Conner McGovern, Mi souri: Can be star on bench at combine Deon-Tay McManus, Marshall: WR bench pre ses 385 pounds Shawn Oakman, Baylor: Very intimidating at 6-8, 260 Joey Bosa, Ohio State: Daunting presence for opposing QBs Scooby Wright, Arizona: Is big-play machine for Wildcats Trevone Boykin, TCU: Dual-threat QB is tough to deal with William Likely, Maryland: Arguably Terps' most valuable player Deion Sanders, Jr., SMU: Pint-sized "Prime Time" Jakeem Grant, Texas Tech: A Red fan favorite Sojourn Shelton, Wisconsin: More than a speedy special teamer Sunny Odogwu, Miami (Fla.): Primed to notch first career start LaQuan McGowan, Baylor: 400-pound TE is a must-watch Zach Banner, USC: One of two Trojans on this list Denver Kirkland, Arkansas: Two Hogs also NFL San Francisco 49Ers Jersey among CFB's biggest Jordan Italiano, Kent State: Chemistry major on a medical track , Notre Dame: Regular on ND's dean's list Mike Bercovici, Arizona State: Also a wiz with ASU's offense Ronnie Harris, Stanford: Medical school is next for this DB Marlon Humphrey, Alabama: Speedster is son of ex-NFL RB Kolby Listenbee, TCU: Posted fastest 100 among football players Devon Allen, Oregon: Pulled off rare 110 hurdles double KD Cannon, Baylor: Has appropriate name for a speedster Joey Bosa, Ohio State: Displays athleticism with back flips Corey Coleman, Baylor: One of many freakish athletes in Waco Montese Overton, East Carolina: LB clocked in low 4.3s in 40 Cameron Echols-Luper, TCU: Big 12 indoor long jump champ Adoree' Jackson, USC: Follow up to freshman year should be fun Myles Jack, UCLA: Proven worth on both sides of the ball Trevone Boykin, TCU: Just look at 2013 season for proof Charles Nelson, Oregon: Returner/WR could see time at DB Karl Joseph, West Virginia: Sledgehammer masquerading as DB Su'a Cravens, USC: Played strong safety/linebacker hybrid role Michael Caputo, Wisconsin: Reminds some of legend Anthony Zettel, Penn State: Had no i sue "tackling" a tree Kirby Smart, Alabama: "Hot coordinator" for years now Scott Frost, Oregon: Guided 's progre s Lincoln Riley, Oklahoma: Understands spread offenses Mike Norvell, Arizona State: Directs Sun Devils' prolific offense Jim Mora: Former NFL coach rehabbing image at UCLA Nick Saban: Might carry more weight now with players David Shaw: Spent nearly a decade coaching in NFL Kevin Sumlin: Hefty A&M contract hinders move up : Few take the game as seriously : Detail-oriented and fiery competitor : Motivational techniques are second to none : Sharp football mind who understands game Les Miles: Pre sure mounting after disappointing 8-5 season Kirk Ferentz: Big buyout hinders coaching change Larry Fedora: His Tar Heels teams have underachieved Al Golden: Likely needs Bruce Ellington Jersey eight-win season to save job Nick Saban: So good he raises standards of other programs Urban Meyer: Just collected his third national title Art Briles: Has made Baylor football relevant again Jim Harbaugh: College football's most interesting man? Floyd of Rosedale: Bronze pig is prize for Big Ten rivals Paul Bunyan's Axe: Keepsake in most-played FBS rivalry The Stanford Axe: Once decapitated straw figure in Cal's colors Territorial Cup: Was once "lost" for 80 years in basement of church Oklahoma-Texas: Bucket list-caliber rivalry game Notre Dame-USC: CFB's greatest intersectional rivalry Army-Navy: Fantastic pageantry caps off regular season Cal-Stanford: Produced greatest single play in CFB history Oregon: Don't dare me s with The Duck Ohio State: Brutus is a regular at big-time events Georgia: Uga is one of the cutest mascots around Colorado: Few things cooler than Ralphie running on field Oregon: Everything Ducks wear is "alternate" Michigan State: Prepare yourself for "Mach Speed" Notre Dame: Clean green jerseys for special occasions Navy: "Summer Whites" are appropriate nod to history Oklahoma's mesh jerseys: Made famous by "The Boz" Notre Dame: Literal gold standard in college football Michigan: Winged lids date back to leather-helmet days Alabama: Signature numbers on side of helmets Byron Cowart, DE, Auburn: Considered to be No. 1 recruit Josh Rosen, Brandon Aiyuk Jersey UCLA: Could be 's succe sor Malik Jefferson, Texas: High expectations in Austin Calvin Ridley, Alabama: Can help ease lo s of Cody Ke sler, USC: 39 TDs to just 5 INTs in 2014 Trevone Boykin, TCU: Reigning Big 12 Offensive POY Laremy Tunsil, Ole Mi s: Might be CFB's best pa s protector Ezekiel Elliott, Ohio State: Coming off postseason for the ages Everett Golson, Florida State: 'Noles get plug-and-play QB Devonte Fields, Louisville: Big 12's Defensive POY in 2013 Marquavius Lewis, South Carolina: Could be key starter on D Victor Salako, Oklahoma State: UAB cut program, OSU gets OT Shilique Calhoun, Michigan State: Anchors a top CFB defense Vernon Hargreaves, Florida: SEC's best corner Scooby Wright III, Arizona: Won lots of trophies in 2014 Joey Bosa, Ohio State: Dominant presence for champs Follow College Football 24/7 on Twitter __.