http://www.boxrec.com/media/index.php/Category:Mexican_World_Champions Have fun bro.. The answer is there somewhere.
Battling Shaw. He beat Johnny Jadick by MD over 10 rounds on Monday February 20th 1933 to capture the World Light Welterweight Title.
Damn for once someone with a worthy question!! Dont know the answer but now you got me thinking....good one. Im not Mexican BTW (yup imma Rican Cotto fan,lol) but I WOULD like to know the answer....
Jose Perez Flores AKA: Battling Shaw. Won the Jr Welterweight Championship from: Johnny Jadick on Feb, 20 1933. Earning a shot by dropping a 10 Rd. Decision to Joe Ghnouly in his previous fight. He fought two non-title fights before losing the title to Tony Canzoneri by 10 Rd. Decision. He never fought at the Championship Level afterwards.