Another screamer for boss Ismael
half-volley — again from 25 yards out.
For yesterday’s encore, the former Leeds United man hit an unstoppable drive to leave Foster helpless as the ball zipped in off a post.
At least it sparked up the Hornets, and the visitors forced Oakwell keeper Jack Walton into action three times as they piled on the first-half pressure. A cross by wingback Kiko Femenia was cut out by a diving Walton.
Then Walton was off his line to grab the ball from the feet of Joao Pedro, who had been set up by Ismaila Sarr, before smothering another low cross by Ferminia, the Spaniard being denied again when he tried a shot himself.
Barnsley depended on quick breakouts to threaten the Watford goal.
From one such move, Patrick Schmidt fed Dominik Frieser, who hit a fierce effort over.
Hornets skipper Tom Cleverley put a powerful effort the wrong side of the post, and Ben Wilmot did little better when he sent a header over and put another one wide.
Barnsley substitute George Miller should have sealed it when he was set up with a one-on-one chance against
BARNSLEY: Walton 7; Sollbauer 6, Helik 7, Anderson 7; Brittain 5 (Oduor 45, 6), James 6 (Kane 71, 5), Mowatt 8, Styles 6; Frieser, 6, Schmidt 6 (Miller 59, 6), Chaplin 6.
Unused subs: Collins, Halme, Thomas, Simoes.
WATFORD: Foster 6; Femenia 7, Cathcart 6, Troost-Ekong 6 (Gray, 75), Wilmot 6, Sema 6; Cleverley 7 (Hughes 82), Capoue 6, Chaloubah 6 (Garner 65, 6); Sarr 7, Pedro 6.
Unused subs:: Bachman, Ngakia, Kabasele, Quina.
MAN OF THE MATCH: Alex Mowatt. Another long-distance wonder goal gave Barnsley their second win in five days.
Foster, only to stab wide. But the day belonged to Barnsley, who look good to steady the ship under Ismael.
Watford boss Vladimir Ivic said: “I’m concerned this is our third game in a row without a win. We created opportunities but couldn’t score. I am disappointed.
“A mistake by us let them in to score a fantastic goal, but we must start better and work harder.
“We have to improve and start with more confidence.”