They have won two of his three games in charge and were also excellent in a 5-3 defeat at promotion-chasing Southampton at the weekend.

Lacklustre Sunderland's own revival of three games unbeaten came to an end as the hosts secured their first league double over the Black Cats since 1961.

Michael Beale's team could have moved into the play-off places with a win, but they were second best and could have lost more heavily as Josh Koroma hit a post and Jobe Bellingham cleared a Jack Rudoni header off the line.

The closest they came to a goal was when Trai Hume was denied by home keeper Lee Nicholls late on.

Worthington has expressed his reluctance to take the job on a permanent basis but the team is surging with confidence and positivity since he agreed to take the reins following the sacking of Darren Moore just over a fortnight ago.

They gave Saints a real shock on Saturday before succumbing to three late goals after leading 3-2, and this victory boosted their battle to stay up.

Sunderland arrived at the John Smith's Stadium in decent form, having taken seven points from their three previous games, and knowing a win - and results elsewhere going their way - could see them back in the top six.

They rarely looked like fulfilling their part of that possibility as resurgent Huddersfield made their intentions clear from the first whistle with an aggressive attack that ended with Ben Wiles' far-post header being blocked.

The Terriers lived up to their nickname with some fierce pressing and David Kasumu was inches away from opening the scoring after Sorba Thomas, in a rich vein of form, had unlocked the defence with a surge of pace.

Their goal, on 37 minutes, was a triumph from the training ground as a short free-kick outside the box was disguised and Rudoni's shot took Sunderland keeper Anthony Patterson by surprise.

He could only block the ball into the path of Pearson and the defender used his thigh for his second goal in consecutive home games.

Sunderland almost had a leveller on the stroke of half-time as Dan Neil's speculative 25-yard effort squirmed through Nicholls' fingers and fell just outside the post, much to the keeper's relief.

The Black Cats pressed for an equaliser in the second half but Huddersfield still looked more likely to score as Koroma's whipped free-kick took Patterson by surprise and pinged the post.

Rudoni's header then found Bellingham in the right spot to clear off the line but, as the clock ticked down, Sunderland twice went close to equalising.

Hume raced clear from Bellingham's pass, but Nicholls got a vital touch to take the shot past the post.

And as the game entered the final minute of added time, Luke O'Nien's cross brought a desperate, panicked clearance from Tom Lees, making his 550th league appearance, with the ball uncomfortably sliced over his own bar.

Huddersfield interim manager Jon Worthington told BBC Radio Leeds:

"It was a squad effort, and I knew it would be off the back of the Southampton game - I needed everyone, and everyone chipped in.

"We have top leaders and characters like Matt Pearson, Tom Lees, [Jonathan] Hogg when he comes on and Lee Nicholls, so we had good voices out there. If someone misses a tackle, someone else comes in [to cover].

"Everyone was fighting for each other and that's how I see the game."

On being in charge for the next game: "I'm not sure to be honest. The plan was to sit down tomorrow. If I am, I'll look forward to it, and if I'm not, I'll support whoever is in charge."

Sunderland manager Michael Beale told BBC Radio Newcastle:

"We got into some good areas in the first half without looking as big a threat as I would like, and had some incredible chances in the second half.

"But we lost the game to a set-play, and that happened against Middlesbrough, Ipswich and now this, and it's on me, and I have to fix it. It's not good enough.

"We had the big chance with Trai, but it was an incredible save, after losing Paddy [Roberts] and having to end the game with 10 men.

"In both boxes we have come up short and conceded a set-play to the team that are number one for set-plays."