Mark Pszonak contributed to this report.

The college football regular season is over and numerous true freshmen have stood out. The annual postseason Farrell Freshman 15 continues today, led by SEC, Big 12 and Pac-12 stars.

FARRELL: Freshman 15, Nos. 13-15 | Postseason top 50 CFB players

MORE: Class of 2017 Rivals100 | Class of 2017 Rivals250

The skinny: Delpit released a top 10 list after his junior season, which he dwindled down to LSU, Florida and Clemson during the summer. He finally committed to LSU while at The Opening in Oregon. The Tigers had a few holes in their secondary coming into the 2017 season, which allowed Delpit to rise to the occasion and perform like a veteran. With 52 tackles, eight pass break-ups and one interception, he could very well be the next great safety to come out of Baton Rouge.

Farrell’s Take: Delpit was one of the players in the 2017 class I tagged as potentially under-ranked because I felt he was just starting to scratch the surface of his potential. He had great range and length, and his instincts and ball skills were excellent, and we got to see all of that this season. We had him ranking highly at No. 70 overall, but he could end up being a guy who plays like a five-star.

The skinny: Sermon committed to the Sooners in late April, over an abundance of top programs such as Alabama, Florida, Michigan, Georgia, Oregon and Auburn. With Oklahoma losing a majority of its rushing attack from 2016, there was plenty of opportunity for Sermon to contribute immediately. He grabbed the opportunity and ran with it, rushing for 710 yards and five touchdowns on 119 carries while averaging 6.0 yards per carry for the potent Sooners’ offense.

Farrell’s Take: Sermon was a Rivals250 prospect with size and power, but it has been his footwork and speed that have impressed early in his college career. We thought it would take a little while for him to adjust to the speed and wide-open play of the Big 12, but he has hit the ground running and become a huge part of an offense that was in need of replacing two superstar running backs in Samaje Perine and Joe Mixon. Sermon’s been consistent all season and has shown his ability as a pass catcher, as well.

The skinny: After seeing his older brother, Brenden, get under-recruited before picking up a late offer from Oregon, Colin experienced a very similar situation. After picking up offers from schools like UNLV, Fresno State, New Mexico and Buffalo, Arizona finally joined the chase in December, which led to his commitment to the Wildcats the day after Christmas. As part of a defense loaded with young talent, Schooler may have shined the brightest this fall with 89 tackles, 13.5 tackles for loss, four sacks, two interceptions and one forced fumble.

Farrell’s Take: A high three-star linebacker out of high school, Schooler had good size and excellent instincts, but wasn’t the most athletic linebacker and wasn’t a quick-twitch kid, which is why he fell short of four-star status. However, he’s already playing well above his ranking and always seems to be in the right position and diagnoses plays with ease. He could be a future star for a very young and talented Arizona defense.