This spring, whenever Baylor center Kyle Fuller has looked left, looked right or even looked forward, he's seen a new face.

That's because, well, all of the old faces are gone.

After capturing back-to-back Big 12 titles and challenging for a third last season before injuries down the stretch derailed their quest, the Bears are in an unusual spot as they attempt to retool for another run at the conference championship.

Though there's experience at quarterback, running back, receiver and at the back end of the defense, the frontlines on both sides of the ball were wiped out by graduation, as well as defensive tackle Andrew Billings' early entry to the NFL draft.

Fuller, in fact, is the only returning regular along the Baylor offensive or defensive lines, which faces the daunting task of replacing the outgoing contingents's 237 career starts.

"Being the only (returner) here puts a lot of responsibility -- there was already a lot of responsibility on me already -- but it puts more," Fuller, who will be a three-year starter this season, said in a recent phone interview with ESPN.com. "I have to establish and remind a lot of the younger guys what the standard is here as far as being great. I have to tell them the things the older guys sacrificed for us to get us where we are now."

That is quite the responsibility. Especially considering the massive shoes that must be filled across the board.

In 2015, the Bears featured one of the most dominating offensive lines in Big 12 history. Baylor led the country in scoring and total offense, and finished second in rushing offense, despite losing its top three quarterbacks to injury over the final month of the season. Left tackle Spencer Drango was a unanimous All-American, while guards Blake Muir and Jarell Broxton both received All-Big 12 consideration; Fuller himself was a second-team all-league pick.

The defensive line, meanwhile, led by Billings, the Big 12 co-Defensive Player of the Year, was also as good as any in the conference, and easily the best of the Art Briles era in Waco.

"'No pressure, no diamonds' is a big quote we have here," Fuller said. "Having the pressure to live up to what has been done in the past is definitely something motivating the guys. And you see guys really trying to compete to get a spot on the field."

Offensively, that competition has included three former junior-college transfers in Mo Porter, B.J. Autry and Dom Desouza, a pair of former FBS transfers in Ishmael Wilson (Texas A&M) and Rami Hammad (Texas) and sophomore Blake Blackmar. Eventually, top-rated freshman guard Patrick Hudson will join the fray when he arrives this summer.

The Bears have some more proven pieces defensively, notably in end K.J. Smith and tackle Byron Bonds, who've combined for 19 starts. Baylor is also banking on a big impact from Jeremy Faulk, who was the No. 2 juco defensive tackle in the country.

"These guys are talented, but they've got to learn how to play," Briles told reporters earlier this month. "We've got a bunch of guys without many snaps, and we've got to teach them how to get there in a hurry. Right now it's pretty wide open, except for the center position (Fuller)."

Which is why, with so much inexperience collectively stepping in around him, Fuller acknowledges the onus is largely on him to help whip the lines back into championship-caliber units.

"I've been here long enough that I've prepared for a moment like this," Fuller said "I've been prepared by the guys that were here before me, and my coaches.

"I've been prepared to handle responsibility like this."