Jose Paolo Guerrero's 37th-minute effort was the difference between the two sides, and Keshi was left fuming.
"We can talk about jet lag and all that but there is always a reason for failure, and I hate failures," Keshi said as he broke with his tradition of giving his players the day off after a game and ordered them back to training.
"In my entire career as a player and a coach, I have never lost two matches consecutively. That is why we must regard this as the very last loss of this new order and return to training on Wednesday morning with an eye on victory at all times," he thundered.
The Super Eagles struggled to gain a foothold in the game in the opening half, allowing Jeferson Farfan the freedom of the park.
The Hoffenheim man took advantage to orchestrate the game-winning goal on a break-away from a failed Nigeria free-kick.
Moments later, it could have been two, but for Juwon Oshaniwa's timely goal-line clearance.
Keshi threw on Obiorah Nwankwo and Nnamdi Oduamadi in the second period, and the Eagles hauled themselves back into the game.
But it was not enough to earn them a share of the booty as they succumbed to their second defeat on the spin, following a 2-3 reverse against Egypt in their last match.
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