Ravendust said:He gets them between his last appearance in Volume 14 Chapter 9 and his first appearance in Chapter 10, so presumeably he gets them while training for the tournament - though it's true you never see him get them.
And between episodes 132 and 133 of the anime (including filler);
Nope. Yamcha received his scars when he was training for the tournament, which we do not see. Look at mf29's quote.Sandstorm said:Yamucha got the scars when Goku kicked him in the face when they first met.