Charlton suffered a surprise 1-0 defeat to Welling United in their latest pre-season friendly.
Iain Dowie fielded a youthful looking side and Nationwide Conference South neighbours Welling secured an impressive victory to boost them ahead of the new season.
An unfortunate own goal from Simon Walton early in the second half was enough to condemn Charlton to defeat.
Wigan continued their pre-season preparations with a 2-0 win at Southport.
Goals from Kris King and Lee McCulloch were enough to give Paul Jewell's men the victory.
Substitute King broke the deadlock on the hour mark and McCulloch sealed the win in the final minute with a somewhat fortunate strike.
Summer signings Emerson Boyce and Tomasz Cywka made their debuts for The Latics at Haig Avenue
Sheffield 1 Hartlepool 5
Welling 1 Charlton 0
Southport 0 Wigan 2