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Poor finishing and the woodwork denied Charlton top spot in League 1 as Phil Parkinson's side could only manage a goalless draw against Oldham at The Valley on Saturday.
The hosts dominated the game and almost went ahead in the 69th minute when Nicky Bailey's free-kick found Miguel Llera but his effort clipped the top of the bar.
Izale McLeod should have broken the deadlock 12 minutes from time when Therry Racon played him in but the striker skewed his shot well wide.
It wasn't Charlton's day and they were denied by the woodwork for the second time on 85 minutes - this time a looping overhead kick from defender Kelly Youga that beat keeper Dean Brill but not the crossbar.
The Addicks stay second in the division, a point behind Leeds having now played two games more.
Addicks: Elliot, Richardson, Youga, Llera, Dailly, Bailey, Shelvey (McLeod 64), Racon, Sam (Wagstaff 84), Spring, Burton (McKenzie 76). Subs not used: Randolph, Basey, Solly, Tuna.