Rotherham 1-2 Leicester
Don Valley Stadium
DJ Campbell grabbed his third pre-season goal in succession to leave manager Paulo Sousa with a healthy dilemma going into Leicester's curtain raiser with Crystal Palace.
Campbell played the full 90 minutes and scored a sizzling winner to give the Foxes victory over their League Two opposition, leaving further questions over the striker's future at the Walkers Stadium.
Paul Gallagher had put Sousa's side in front in the first half, before Millers striker Adam Le Fondre levelled things up from the spot after Tom Elliott was felled by goalkeeper Chris Weale inside the penalty area.
But Campbell struck what was to be a sweet winner on the hour mark to hand the Foxes the victory in their opening pre-season match on English soil this summer.
Sousa handed a start to new signing Tom Kennedy at left back, whilst Nicky Adams was given another shot at right-back in an experimental role for the former-Bury man.
It took just 12 minutes for City to break the deadlock at an empty Don Valley Stadium. Lloyd Dyer's cross in from the left was headed down by Steve Howard for Gallagher to finish neatly into the bottom corner.
But the Foxes' lead was dismissed just over five minutes later when goalkeeper Chris Weale brought down Rotherham's on-loan Leeds striker Tom Elliott inside the penalty area.
Elliott was impressive for the Millers all evening, and may well prove a useful weapon for Ronnie Moore's side this season during his time away from Elland Road.
Adam Le Fondre - who has been linked with Leicester on two seperate occassions - stepped up from the spot to level things up for the home side.
It was a clumsy error from Weale, although not helped by Kennedy's weak pass back to the usually-dependable goalkeeper.
In truth it was a shaky night on the whole for Weale who looked a little uncomposed at times, one particular incident almost allowing Le Fondre to score after the goalkeeper dithered in possession.
The remainder of the opening period petered out with little to discuss, allowing Sousa to ring the changes at half-time to introduce several new faces to the fold.
Youth academy graduates Jorrin John and Tom Parkes were sent on for the second half, whilst Jeff Schlupp and Aman Verma were also given opportunities to shine by Sousa in the second period.
Leicester were a brighter unit after the break, and soon began to take control of the game with passages of neat passing play.
Dany N'Guessan was lively down the right, while Oakley and John were seeing healthy amounts of the ball in advanced positions in the middle.
Cutting edge was a problem however, until the 60th minute when the impressive Campbell lashed in a wonderful strike from a tight angle to hand the Foxes the lead.
Rotherham could and should have levelled the tie up soon afterwards, but Danny Harrison somehow managed to scoop a close-range effort over the crossbar to keep City's lead intact.
Leicester saw out the remainder of the game wiht little fuss until proceedings were cut short 10 minutes early following a failure of the Don Valley floodlights.
There were plenty of positives to take from the 80 minutes of football that were allowed, not the least the surprisingly active contribution of DJ Campbell.
The striker was Leicester's best player on the night without question, working incredibly hard and looking sharp along the way.
Elsewhere Tom Kennedy provided handsome food for thought with a comfortable performance at left back (wayward pass-back aside), a suggestion that Bruno Berner may well face a fight on his hands this season to keep his firts team spot.
City's youth academy stars can also be pleased with their contributions on the evening, all featuring in the second period and staking their claim for a shot at the first team squad next season.
Read Vital Leicester's opinion of the DJ Campbell situation in the aftermath of last night's pre-season victory right here later this evening.
Leicester: Weale; Adams, Morrison, Hobbs, Kennedy, Gallagher, King, Wellens, Dyer, Howard, Campbell. Subs: Logan(46 for Weale), Fryatt (46 for Howard), Oakley (46 for King), Parkes (46 for Morrison), Neilson (46 for Adams), N'Guessan (46 for Gallagher), Kermorgant (46 for Dyer), John (75 for Kennedy), Verma (46 for Wellens), Schlupp (65 for Campbell).