Milwall’s Gregg Wylde was sent off while playing for the Lions’ development side in a 1-1 draw with Cardiff on Monday.
Wylde, who has played five times for the senior side since joining in the summer, was dismissed along with Cardiff’s Rollin Menayese late in the game for an altercation.
Six of Millwall’s seven substitutes from Saturday’s 4-0 win over Bristol Rovers started, with Wylde joined in the line-up by Tom King, Paul Rooney, Shaun Cummings, David Worrall and Alfie Pavey.
Millwall went in front early on as Jamie Philpot followed up his own shot, and the striker, returning to the club after a loan spell with National League Bromley, later nodded wide from a Kyron Farrell free-kick.
Cardiff, though, levelled just after the hour mark through Eli Phipps, who tapped in past King.
Meanwhile, Charlton’s Under-23s won an entertaining game against Ipswich 4-2.
The Addicks youngsters fell behind when Luke Woolfenden headed in a corner, but equalised shortly afterwards through Josh Umerah’s turn and shot.
And Charlton were ahead by half-time as Reeco Hackett-Fairchild flicked on Regan Charles-Cook’s cross, and Michall Kenedy netted.
Ipswich levelled eight minutes into the second half when Kundai Benyu fired in a free-kick from 25 yards.
But two excellent goals from the edge of the box turned the match Charlton’s way, as first Hackett-Fairchild and then Umerah scored from distance.