The Young Lions held DPMM at one stage, but eventually still fell to an inevitable drubbing which left coach Patrick Hesse still looking for a first win under his belt.
After a 2-1 home defeat to Tampines Rovers which saw them concede two early goals, DPMM were determined not to let history repeat itself and duly went ahead after just four minutes in.
A right-wing cross by Paulo Sergio was knocked down by Rafael Ramazotti into the path of Maududi Himi, who had the simplest of tasks of converting past Young Lions goalkeeper Benjamin Bertrand from close range.
Sergio could have extended their lead to two nine minutes later, but his 20-yard free kick crashed off the woodwork.
Buoyed by that let off, the Young Lions went forward and could have scored on two occasions but Fareez Farhan twice failed to capitalise on the openings.
The 21-year-old redeemed himself a minute before half time, as he lashed home the equaliser after Shannon Stephen's chest down.
Three minutes after the break, Fareez had a brilliant opportunity to give his side a shock lead after his shot was parried by DPMM keeper Wardun Yussof.
However, he somehow skied off his follow-up high and wide into the stadium’s floodlights.
The Young Lions were to pay the price on 50 minutes as DPMM went 2-1 ahead, with Ramazotti nodding home from an Azwan Ali corner.
Things got from bad to worse for the local developmental outfit eight minutes later, with centre-back Amirul Adli unfortunately sliding the ball into his own goal to put the home side two goals to the good.
Hesse then reacted by throwing on attackers Adam Swandi and Hazim Faiz, but the duo wereunable to breach a DPMM backline.
Eventually the Wasps completed the rout eight minutes from time, with Sergio calmly converting from 12 yards out for his first goal of the season after he was brought down by Amirul.
The result meant Steve Kean’s defending champions went up to fourth in the table, three points behind pacesetters Albirex Niigata (S), while the Young Lions remained rooted to the bottom with three points from eight matches.comments