Charlton were dumped out of the Checkatrade Trophy after losing 3-0 to Oxford on penalties.

Johnnie Jackson, Stephy Mavididi and Reeco Hackett-Fairchild missed their spot-kicks against an inspired Scott Shearer.

Wes Thomas cancelled out Karlan Ahearne-Grant’s seventh-minute opener to take the tie to penalties.

Karl Robinson named a strong side against last season’s finalists Oxford with first-team regulars Ahmed Kashi, Mark Marshall, Josh Magennis, Ezri Konsa and Jay Dasilva starting.

Charlton played with a back-three for the first time this season and it paid dividends early on. And they took the lead in emphatic style when Ahearne-Grant latched on to a poor Ricardinho pass to guide the ball into the top corner in the seventh minute.

Konsa could have doubled Charlton’s lead soon after but dragged his shot wide from a Marshall corner.

Gino van Kessel fired an effort straight at Dillon Phillips, which was Oxford’s best chance of the first-half.

Oxford equalised nine minutes after the restart when Anfernee Dijksteel misjudged the bounce of the ball and was outmuscled by Thomas, who slotted past Phillips.

The U’s were a completely team in the second period and Jack Payne was unlucky to see his 20-yard strike trickle wide.

The visitors’ tails were up and Jackson stopped a certain goal when he cleared Malachi Napa’s shot off the line after Phillips had denied Thomas.

Mavididi grazed the post in injury-time but both sides created very little in the remaining 20 minutes and the tie was settled by a penalty shootout.

Charlton XI: Phillips, Dijksteel, Konsa, Jackson, Marshall, Kashi (Lapslie, 59), Aribo, Dasilva, Reeves, Magennis (Mavididi, 64), Ahearne-Grant (Hackett-Fairchild, 34).

Subs not used: Amos, Lennon, Mascoll, Holmes.