The first one on one is against rock lee who won without a single scratch ? ROCK LEE
The two battles he is in were against genin in the forest of death he wins that one as well as the one on one fight durring the chuunin exams against one of oro's subordinates.(both battles he has the curse mark)
The next fight he is in is against gaara durring the finals he loses.
The next fight he is in is against naruto at the valley of the end.In the end he was the only one left standing this is because sasuke was belittling naruto about how he could not lay a finger on his headband.(Also note that this is called the sasuke retrieval arc not the kill sasuke arc).Naruto never planned on mortally injuring him and instead opts to show him that he can land a blow on him by aiming the resengan at his heandband and NOT anywhere else where it would of done some actual damage.The next time he truly fights on screen is against Deidara where we all witness him using his sharingan to cast a genjstu on manda making him take the blast.The next match as you all now itachi planned he went into the fight pushing sasuke to his limits so he can seal oro.Sasuke was no match for him.Next sasuke kills oro who could not use any type of ninjustu and was literally bed ridden.Though if your a sasuke fanboy
you will take whatever "win" you can find.the next match up is against killer bee who utterly annihilates him.
Sasuke put up a good fight against the raikeage but it looked like the match was a draw.His last battle was against danzo where kirin
was yelling all sorts of crap to sasuke on the sidelines feeding him information he would of never been able to get his
hands on then tries to kill her to get to danzo. So there you have sasuke has not won a single fight on his own
or without some other events happening that has leaned a battle in his favor
come on dude be for real the main characters Sasuke fought with in part 1 all had significant advantages over Sasuke
Haku Had mastery over his KKG
Rock Lee had A full year of the NINJA academy to hone his skills
Gaara Had a tailed beast that he had some mastery of
Naruto Naruto said that he would break every bone in Sasuke's body if he had 2 and drag him back to the village ooops he failed, Even
Naruto acknowledged that he lost that fight
Part 2
Orochimaru Planned on attacking Sasuke first...Sasuke just beat him to the punch and Oro still put Sasuke in the body transfer world and sasuke simply reversed it...Nothing Oro could do...your power fails in comparison to the Sharingan
Deidara Sasuke figured him out from the very beginning of that fight he said that he was not planning on Killing him because he needed him to tell whereabouts of Itachi...Sasuke also stated that he knew he had the elemental advantage
Itachi-Planned for sasuke to win...sasuke still to be quite powerful during this fight as pointed out by itachi
Killer Bee- Sasuke could not kill him in the beginning of that fight and therefore did not go all out...when Sasuke got serious that when he whipped out Amatarasu
5 kages- thats a tall order to deal with and he was able to fight on equal grounds with them and still made it out that fight alive regardless if Tobi saved him...1 on 1 Sasuke would have wiped the floor with them...especially EMS Sasuke
Danzo-well Sasuke just kicked his ass Lol