Four first half goals and an all-round dominant performance saw the young O’s through to next round of the FA Youth Cup.
Tristan Abrahams’ brace got the O’s off and running before strike partner Dalby and Koroma got in on the act, before second half efforts from substitute Ruel Sotiriou and a second for Dalby saw the O’s cruise to victory.
Richard Thomas brought in goalkeeper Sam Roach came in place of first year scholar Arthur Janata, while Dalby also returned to the starting line-up having scored twice off the bench in the 5-3 weekend win over Luton Town.
After a cagey opening 15 minutes where both teams were trying to settle into their style of play, the O’s then managed to assert themselves onto the game by scoring with the first shot on target.
Dalby picked up a loose ball just outside of the opposition box and unselfishly passed out wide to Josh Koroma whose shot was parried by goalkeeper Nathan Bishop. The parry fell straight into the path of the opportunistic Abrahams who calmly slotted the ball into the back of the net.
Abrahams wasted no time and within three minutes doubled his and the O’s tally with a great strike from 25 yards out which gave Bishop no chance in the Blues goal.
Sewa Marah had a chance to pull a goal back for the home side after cutting inside, beating Dan Happe and Rian McLean, but his shot was straight at goalkeeper Roach who saved comfortably.
The young O’s continued to dominate as Dalby made it 3-0 just after the half hour mark. The 16-year-old did brilliantly to pressure the centre back into making a mistake, before winning the ball and then calmly slotting past Bishop.
The goals continued to come thick and fast, with Josh Koroma getting in on the goalscoring act. He took the shot on from the right side of the box from a seemingly tough angle, but he was able to place the ball in the bottom corner.
Southend responded in the second half, but rarely troubled Roach in the O’s goal, while still proving a threat up the other end.
With five minutes remaining, substitute Sotiriou made it an impressive 5-0, when finished calmly from a Dalby pass, but the scoring didn’t end there.
With only a minute left on the clock the O’s added further gloss to the victory as Dalby produced a fine curling finish from just outside the box to round off an impressive all-round display from the young O’s.
ORIENT: Sam Roach, Myles Judd, Toby Stevenson, Henry Ochieng (Teddy Perkins 89), Dan Happe, Rian McLean, Josh Koroma (Ruel Sotiriou 81), Steven Alzate, Tristan Abrahams, Sam Dalby, Pat Adamson (Andrew Camilo Tayaca 87).
SUBS: Arthur Janata, Ernold Haxhiu.
GOALS: Abrahams (2), Dalby (2), Koroma, Sotiriou.