Todd's team have made an impressive start to their attempt for an immediate return to the Premiership with 17 goals and five wins out of seven.
But they were brought down to earth at Southend two weeks ago when they lost 5-2 in their only defeat so far. ``We are up there to be shot at and complacency is something we just can't afford, '' Todd said.
Second-placed Barnsley go to Oldham aiming to get back to form after their perfect League start was brought to an end by Queen's Park Rangers, who won 3-1 at Oakwell last week.
Graeme Sharp, whose Oldham side are yet to register a League victory, is likely to field his two new signings, defender Shaun Garnett, pounds 150,000 from Swansea, and striker Ian Ormondroyd, pounds 30,000 from Bradford.
Wolves, who are third, entertain Sheffield United with their manager, Mark McGhee, challenging his side to remain unbeaten at Molineux this season.
"We're not kidding ourselves but we have to be determined, if possible, not to lose a game here this season," said McGhee, whose side will be on a high after their 4-2 win in the Black Country derby at West Bromwich on Sunday.
Sheffield United will be keen to get back on course after losing 3-1 at home to Ipswich in the League last Saturday and 2-1 against Second Division Stockport in the Coca-Cola Cup on Tuesday.
Dave Bassett, who turned down Manchester City's job offer this week because he believes he has a good thing going at Crystal Palace, takes his team to Reading in search of a third successive win in all competitions.
The home side may recall Dariusz Wdowczyk after the Polish defender held clear-the-air talks with joint managers Jimmy Quinn and Mick Gooding after a row during the 3-2 defeat at West Brom last week.Reuse content