STATE COLLEGE, Pa. -- Penn State quarterback Christian Hackenberg hasn't even completed two weeks of spring practice, so it's still anybody's guess how the reigning Big Ten freshman of the year will perform in 2014.

But, over the last 25 years, five other Big Ten quarterbacks have found themselves in similar positions. Like Hackenberg, they impressed fans with memorable rookie campaigns, were named the Big Ten freshman of the year and raised expectations over the offseason.

Hackenberg's sophomore season won't be in the books for quite some time. But here's a look at those other five QBs and how they fared in their sophomore seasons and in their careers:

Braxton Miller, Ohio State, won award in 2011

Sophomore stats (2012): 148-of-254 passing (58.3 percent); 2,039 yards, 15 TDs, 6 INTs; 227 carries, 1,271 yards, 13 TDs

Ohio State record (2012): 12-0, no postseason due to sanctions (2011: 6-7, lost to Florida in Gator Bowl)

Sophomore synopsis: It would've been difficult to ask Miller for a much better sophomore campaign. He was the Big Ten's offensive player of the year, finished fifth in the Heisman voting and even bested Carlos Hyde in both rushing yards (1,271 to, 970) and yards per carry (5.6 ypc to 5.2 ypc). Miller was more renowned for his legs than his arm, but he was still the second-most efficient passer in the conference. He also came up big when his team needed; the Buckeyes won six games that were decided by a touchdown or less.

His career: He could've opted to leave early for the NFL this offseason but instead decided to stay one last season. He's becoming more well-rounded with each season, and he's once again one of the favorites to win the Heisman.

Terrelle Pryor, Ohio State, won award in 2008

Sophomore stats (2009): 167-of-295 passing (56.6 percent); 2,094 yards, 18 TDs, 11 INTs; 162 carries, 779 yards, 7 TDs

Ohio State record (2009): 11-2, beat Oregon in Rose Bowl (2008: 10-3, lost Fiesta Bowl vs. Texas)

Sophomore synopsis: With the top tailback (Chris Wells) and wideout (Brian Robiskie) from 2008 both gone, Pryor put the offense on his back and carried it to an improved record. Pryor led the team in rushing yards and rushing touchdowns, and he was instrumental in the Buckeyes' Rose Bowl win. He threw for 266 yards, rushed for a game-high 72 yards and was named the MVP. Statistically, his sophomore campaign wasn't his best season -- but he had a lot to overcome.

His career: He led the Buckeyes to three straight BCS bowl berths, but his legacy was marred by an early exit. He was suspended for the first five games of his senior season -- due to Tattoo-Gate -- so he instead opted for the NFL's supplemental draft in 2011. The Oakland Raiders took him in exchange for a third-round pick, although reports this week have said Pryor is now seeking to cut ties with the Raiders because he hopes to be a starter somewhere.

Brooks Bollinger, Wisconsin, won award in 1999

Sophomore stats (2000): 110-of-209 passing (52.6 percent); 1,479 yards, 10 TDs, 7 INTs; 157 carries, 459 yards, 6 TDs

Wisconsin record (2000): 9-4, beat UCLA in Sun Bowl (1999: 10-2, beat Stanford in Rose Bowl)

Sophomore synopsis: The Badgers needed to fill the big shoes of Heisman Trophy winner Ron Dayne, so they leaned a little more on the passing game in 2000. But, make no mistake about it, this was a run-first team that lived and died on the ground while relying heavily on Michael Bennett. Still, Bollinger played a big role as an effective dual-threat quarterback -- and this Wisconsin team came close to equaling success from the year before. Three of the Badgers' four losses were decided by six points or less, and two of those losses came in overtime.

His career: Bollinger never put up big passing numbers -- he never ranked higher than third in a given Big Ten stat category -- but he was consistent and did what was asked of him. The Big Ten Network even chose him as one of the 10 best quarterbacks in the conference from 2000 to 2010. He played five seasons in the NFL and was the Pittsburgh Panthers' QB coach for two seasons.

Antwaan Randle El, Indiana, won award in 1998

Sophomore stats (1999): 150-of-279 passing (53.8 percent); 2,277 yards, 17 TDs, 7 INTs; 224 carries, 788 yards, 13 TDs

Indiana record (1999): 4-7 (1998: 4-7)

Sophomore synopsis: Randle El's sophomore season was his best, by passing numbers, in his four years as a starter. He accounted for 69 percent of the entire offense that season and led the Big Ten with 30 combined touchdowns. The main reason Randle El couldn't lead Indiana to more wins? The defense allowed at least 30 points in nine of 11 contests. The highlight of the Randle El's season came against Illinois in October, when he overcame a 21-point deficit late in the third quarter to force overtime. Neil Rackers nailed a field goal to open up overtime for Illinois, but Randle El tossed a 25-yard TD pass on the very next play to seal the 34-31 win.

His career: The Hoosiers never won more than five games during his career, but he was clearly the team's best player. (And he was probably the most athletic person on campus -- he also played two years of basketball and one year of baseball.) He had a nine-year NFL career with the Pittsburgh Steelers and Washington Redskins.

Eric Hunter, Purdue, won award in 1989

Sophomore stats (1990): 200-of-366 passing (54.6 percent); 2,355 passing yards, 12 TDs, 14 INTs; 97 carries, 0 yards, 7 TDs

Purdue record (1990): 2-9 (1989: 3-8)

Sophomore synopsis: Hunter was looked upon as a young Randall Cunningham, but his career never lived up to those freshman expectations. He threw 11 TDs on 178 attempts as a freshman and just 12 TDs on 366 attempts as a sophomore. The main problem was an inexperienced offensive line, and it only got worse as the season wore on. In the last five games, Hunter had 11 picks.

His career: Those sophomore struggles led to the firing of Purdue's coach, which meant a new coach and a new system for Hunter. The line continued to struggle, Hunter never got back on track, and he saw less time on the field each season thereafter. He earned a reputation for his inability to read defenses, and the Boilermakers never won more than four games a season during his career.