Albion's first-half double strike by substitutes has been confirmed as unprecedented for the club.

Leon Balogun and Florin Andone both went off the bench and scored by half-time as the Seagulls beat Crystal Palace.

That had never happened before for Albion.

Only six subs had previously scored a first-half goal for the club.

The most recent was Romain Vincelot in November, 2011 (below).

The Argus: Romain Vincelot is mobbed after heading the winner (photo Simon Dack)

The Frenchman replaced injured left-back Marcos Painter and struck with a header to secure a 2-1 win over Coventry City in a Championship fixture at the Amex.

Before that, Calvin Andrew scored after 38 minutes of the 2-2 draw at Huddersfield towards the end of the League One Great Escape of 2009 under Russell Slade.

Glenn Murray, one of the men replaced on Tuesday, scored as a sub on 45 minutes when Millwall were swept aside 4-1 in the Withdean rain in November, 2008.

Murray had gone on 17 minutes earlier for the injured Adam Virgo.

Danny Cullip, in the infamous rainswept 4-3 Friday night home defeat to Rochdale in 1999, and Peter Sayer, at home to West Ham in 1978, were both subs who scored before the break.

The Argus:

Balogun’s right-foot finish was the second earliest goal by an Albion sub.

Back in October 1968, Dave Armstrong took over from John Templeman and scored after 25 minutes in a third-tier game at Orient, which Albion ended up losing 3-2.

Club historian Tim Carder, who provided the above information, said there are instances of substitutes coming on and scoring inside a minute, as Balogun managed in the derby.

Virgo, versus Brentford at Withdean in March, 2010, was the last such example.

It was Virgo’s last goal for the club.

Before Balogun, the most recent goal by a Seagulls player with his first touch of a match is thought to be by Bobby Zamora in the 1-1 draw at Burnley three years ago.

Zamora started the game and gave Albion a first-minute lead from close range.