Konohamaru Sarutobi - Tumblr Posts
No. Temari did not almost lose to Konohamaru. Not even close.
This might be an unpopular opinion, but 13 year old Konohamaru Did Not almost beat Temari.
Even Shikamaru said that Konohamaru was lucky, because he was about to get caught in Temari's wind synthe.
She was surprised that he could perform that technique as a genin, but she was not at all concerned about whether or not she was going to lose that fight.
Up until that point, Konohamaru had been giving the fight his all, and Temari had been going easy on him.
When Konohamaru threatened Temari with lethal force, she prepared herself use lethal force in return.
Remember, as a genin at 16 years old, Temari killed Tayuya with her wind synthe jutsu. You think she wouldn't have done the same thing to Konohamaru as a 19 year old Jonin????
Temari's speciality is long distance fighting. Konohamaru's is close distance and mid distance fighting. He wasn't going to win against her, because he wasn't going to get close to her if she didn't want him to.