Japan confirmed their position as one of the tournament favourites after drubbing their opponents 8-2 in a dominant display and will be anticipating picking up another three points on Monday.
But Sapo would not be drawn on how his side would fair against a side that lost out 3-1 to Australia as they look to cement their last-eight berth.
"You can say it's always difficult before the match but after it starts, we'll see what we can do," said the Brazilian.
Sapo also confirmed that Daisuke Ono did not come out for the second half of the Chinese Taipei victory as a precautionary measure.
Ono, who opened the scoring, took another knock to a knee injury first picked up back home but the Brazilian confirmed will be fit to face Turkmenistan.
"He did not play in the second half as he had picked up a knee injury in Japan and got hit in the same place, so we decided to take it easy with him." Sapo added.
Turkmenistan may now face an uphill struggle to reach the last eight and not many will give them much of a chance against the Japanese.
But coach Eldar Ramazanov insisted he was not giving up hope just yet.
"There is a great saying in Turkmenistan; 'If you don't believe in winning, you've already lost,' he said.
Australia face Chinese Taipei also heavy favourites to take a big step towards the knockout phase.
But coach Scott Gilligan echoed his Japanese counterpart by insisting nobody will be taking their opponents lightly.
"Our goal was to win the first two games but we certainly can't rest on our laurels and think that we've already won the game," he said.
"I'm sure Taipei will believe they can win so we certainly can't take them lightly and we'll go into the game just like we did against Turkmenistan. We lift our game and hopefully we can get the result.
"We have two goals. One is winning the quarter-final - and then after that it's a whole new ball game, anything can happen - but the first was winning our first two games."
Chinese Taipei supremo Chen Kuei-jen was less than optimistic about his side's chances, however.
"Australia's quality is better than us and it will be hard because the players will be more tired for the game," he said.
