Oshoala, who won the Golden Ball and Golden Boot at the under-20 World Cup in 2014, underlined her reputation as one of the most exciting players in the game by sealing her team’s victory by rounding off a fine Nigerian move 15 minutes from time.
The 24-year-old, a three-time African footballer of the year, raced onto the Chidinma Okeke’s perfect through ball before accelerating away from her marker and rolling the ball past the goalkeeper.
“But after a while we just decided to go for it. I always say that I’m never under pressure — I just go on the pitch and do my job. It’s an 11-player game and I just look to enjoy the game, have fun and do the right thing for my team. The group is wide open now. We just have to concentrate now on making sure we get the points we need against France.”
Oshoala, who signed a three-year deal with Barcelona last month after an impressive spell on loan from Chinese club Dalian Quanjian, has enjoyed a stellar season.
During her four-month spell at Barcelona, she scored eight goals in 11 appearances and helped the club reach the Champions League final.
She also became the first African woman to play and score in the final of the competition though it was not enough to prevent a 4-1 defeat by French side Lyon Feminines.
Her goal capped a miserable afternoon for the Koreans which had gifted its opponent a 29th minute lead through Kim’s own-goal.
Its frustration was further increased when Lee Geu-min’s strike was ruled out for offside with her side trailing 1-0.
The defeat all but ends South Korea’s hopes of qualifying for the next stage after it was thrashed by host nation France in the opening game of the tournament.
It also leaves Korea, ranked 14th in the world, without a point or goal to its name.
Nigeria will take on France in its final group game on Monday while South Korea takes on Norway