Charlton fell to a 3-1 defeat at the hands of promotion-chasing Brighton & Hove Albion at The Valley on Saturday.
After Sam Baldock put the visitors into an early lead, the Addicks rallied well and equalised through Johann Berg Gudmundsson in the 51st minute.
But the Seagulls quickly regained their lead when Jiri Skalak stroked home and Chris Hughton’s men gained momentum in the latter stages of the second half, before Tomer Hemed dispatched an injury-time penalty to finish things off.
Jose Riga made four changes to the side which shared a goalless draw with fellow relegated side Bolton Wanderers on Tuesday evening with Gudmundsson, Callum Harriott, Alou Diarra and Morgan Fox all returning to the starting XI.
Making way were Yun Suk-Young, Johnnie Jackson, Simon Makienok and Harry Lennon.
Once again, the first whistle was proceeded by a number of beach balls, balloons and other inflatables onto the pitch with play delayed until the seventh minute.
But with the ball finally rolling, it was not long before the visitors took the lead with eight minutes gone.
When Brighton delivered a free-kick into the box, the ball was played back across the face of goal where Baldock lay in wait to stroke the Seagulls into the lead.
Charlton began to come into their own, despite the slow start and Jorge Teixeira headed a set-piece wide before Fox could not quite get enough on his side-footed volley which was held by David Stockdale.
Brighton were next to have a sight on goal in the 22nd minute with former Standard Liège man Anthony Knockaert taking aim with a low effort from 25 yards which Nick Pope was equal to.
Eight minutes before the break, the Addicks embarked on a fine passing manoeuvre which ended with Gudmundsson receiving a pass inside the box, taking a touch and firing a good-looking shot towards the bottom right-hand corner which flew inches past the post and rippled the side netting.
The second period began in much the same vein as the first, albeit a shorter delay of just two minutes before the action could really get going once again.
Five minutes into the half, Brighton came close to a second when Baldock was played into the left-hand side of the box and fired a low, angled shot inches past the right upright, although the Seagulls would soon find themselves back on level terms when the hosts fired home an equaliser on 51 minutes.
Ademola Lookman did well to break free on the left before feeding Jordan Cousins who squared across the face of goal for Gudmundsson to finish.
The Seagulls immediately went about restoring their lead and two minutes later Baldock twisted and turned inside the penalty area before drawing a good save from Pope.
But the visitors would, indeed, grab their second soon after.
With Beram Kayal picking up possession, he jinked forward and played a pass over to Skalak, who finished neatly into the top right-hand corner from the angle.
The action remained relatively quiet until the 82nd minute when Morgan Fox supplied a pinpoint cross which bounced just in front of Gudmundsson 12 yards out.
He showed great technique to send a powerful half-volley hurtling towards goal, but he could only watch as it flew just over the bar.
Harriott came close with a low effort late on, while Pope made a trademark stunning save to tip Knockaert’s shot away.
But the Seagulls would eventually get a third goal and it came from the penalty spot when Rod Fanni tripped Knockaert as he entered the box, and Hemed stepped up to dispatch his spotkick as Brighton sealed the points.
Charlton: Pope, Motta (Lennon 63), Fanni, Teixeira, Fox, Gudmundsson, Diarra, Cousins, Lookman, Harriott, Vetokele(Sanogo 63).
Subs (not used): Mitov, Bergdich, Suk-Young, Jackson, Makienok.
Goal: Gudmundsson 51
Brighton: Stockdale, Bruno, Dunk, Goldson, Rosenior (Bong 69); Knockaert, Stephens, Kayal, Skalak(Murphy 84); Baldock (Sidwell 79), Hemed.
Subs (not used): Maenpaa, Greer, LuaLua, Wilson.
Goals: Baldock 8, Skalak 55, Hemed 90+5 (pen)
Referee: Simon Hooper
Att: 17,160 (3,079 from Brighton)