Manchester United midfielder Shinji Kagawa wasn't fit enough to make the trip to Oman, but that didn't stop his Japan side from getting a huge win in this match in Asia's Group B.
Hiroshi Kiyotake broke the deadlock in the 20th minute with a goal created by Yuto Nagatomo's fantastic cross.
Ater pressing for the best part of the rest of the match, Oman finally got a lifeline through a 77th minute goal on an Ahmed Mubarak free kick.
With the match seemingly destined for a draw, Stuttgart's Shinji Okazaki popped up in the 89th minute and slotted a ball past Wigan's Ali Al-Habsi to give Japan all three points.
The win pushes Japan ever closer to booking their place in the World Cup, as they sit eight points clear of the group's third-placed team with three matches to go. With a spot in the playoff already booked (if everything goes very, very wrong for them), Japan are clear favorites to become the second team (after hosts Brazil) to qualify for the World Cup.
Meanwhile, Oman now sits in fourth place, level on points with the second-placed team (though behind in goal differential) and just a point clear of last. Oman definitely have some work to do to make a push for Brazil.