Top 300 DE Isaiah Chambers signs with TCU

Isaiah Chambers remembers the last moment he had with his mother. It was during practice in eighth grade, when she died of a heart condition while watching him.

After that moment, Chambers made a promise: since his mother died watching him work hard, he would keep working hard to make her proud.

"I'm trying to be successful," he told Bleacher Report. "I want to be successful for her."

His hard work led to a spot on ESPN's Top 300 players in the nation -- he was No. 167 -- and dozens of offers from schools like Michigan State, Oklahoma, Baylor and TCU, of course. Then, last September, he sat at a table with three hats in front of him: TCU, Texas A&M and Texas. He tricked his audience for a bit by grabbing the A&M hat, but quickly brushed it aside and chose the TCU hat instead.

On Wednesday, he made it official by signing with the Frogs.

Chambers is coming to Fort Worth from MacArthur High School in Houston. At about 6-foot-4, 252 pounds, he's listed as a four-star defensive end on Scout, 247sports and Rivals. All three list him as a Top-15 player in his position, with 247sports ranking him the highest at No. 7.

Scout writes of Chambers:

Chambers is an impressive end prospect. He has a very nice combination of height and size and possesses the upper and lower body strength to squeeze and shed blockers who also have size. He moves well for his size with above average short area burst, which allows him to consistently put pressure on quarterbacks and deliver hits. It seems like he is hitting the quarterback or pressuring him more often than not. Can and will deliver big hits.

He'll be a welcome addition to TCU's defensive line, especially after losing top seniors like Terrell Lathan. Chambers may have the chance to play early if he works hard enough.

But working hard shouldn't be too difficult for Chambers. He has a promise to keep, after all.