First of all, "knowing wins"? Is english not your first language?
Second of all, we do not do fights in the same manner as Death Battle does, in which they match up characters based on similarities. For the most part we try to have fights against characters that are in same tier as one another, to make it as fair of a fight as possible without it being a stomp either way and to allow verdicts to be most part fair. You picked two characters being in such drastically different tiers that either way make it a straight up stomp. Kaldor Draigo straight up beats Saber in three of her tiers as he scales to beings much higher than anything she could handle, and could quite literally rip her to shreds. On the other hand, her final and most highest tier could easily rip Draigo apart.
Thirdly, you still have not specify which key you are using for Saber. Are you using her key when she was Kitsurigu's Servant? Or you using the key for when she was Shirou's servant? Or is it Rin's Servant? Or are you using her Ruler key? Do you even know what a key is? And don't tell me you plan on combining them as you literally cannot. Either way this doesn't affect my original statement or verdict, but I want to point out that you literally have no idea on how VS battle fight ideas work.
Either way this is an unfair matchup and I'm going to call someone to close this discussion as quite frankly this is a pointless discussion. I highly recommend you try and read the rules or ask someone to help you understand them. Good day.