LSU replaced de-committed running back Sione Palelei quickly.

A day after the East Ascension High senior switched from LSU to Oklahoma State, the Tigers received a commitment from John Ehret running back Darrel Williams on Tuesday night, his high school coach confirmed.

A consensus four-star prospect, Williams de-committed from Arizona State last week. He had offers from a list of schools including Auburn, Florida, Georgia, Missouri, Nebraska and Tennessee.

Williams, 6 feet, 210 pounds, gives the Tigers 15 commitments and bumps them several spots in the team recruiting rankings. On 24/7 Sports, Williams’ commitment moves LSU from 15th to No. 12. In’s rankings, the Tigers go from 18th to No. 14.

Williams had more than 2,100 yards rushing, a single-season school record, in helping lead John Ehret to a turn-around season. The Patriots, winless last year, won nine games in 2013 and claimed a district championship.

“He’s a special, special running back,” second-year Ehret coach Corey Lambert said. “He’s one of the players that really put our school back where we need to be at.”

Williams played quarterback last season, a way for Lambert to get his star on the field, and ran for more than 1,000 yards. Williams scored 30 touchdowns this season, the coach said.

Williams also played strong safety and outside linebacker.

LSU originally wanted Williams as an “athlete.” A running back spot opened when Palelei, a three-star, switched his commitment to Oklahoma State after a visit last weekend to Stillwater, Okla.

“I think Darrel wanted a shot at running back,” Lambert said. “That’s what he wanted a spot at.”

LSU’s running back recruiting this season has drawn attention.

St. Augustine talent Leonard Fournette is ranked as the No. 1 running back in the nation by most recruiting services. Fournette, choosing, most believe, between LSU and Alabama, is set to make his decision at the Under Armour All-American Game, a showcase for high school seniors, on Jan. 2 in St. Petersburg, Fla.

The Tigers have four capable running backs on staff — Jeremy Hill, Alfred Blue, Terrence Magee and Kenny Hilliard — but at least a couple are expected to make the early leap to the NFL draft.