Modesto Valle won three Italian titles as a defender with US Pro Vercelli in 1911-13, playing in 69 matches with six goals. He earned seven caps with the national team, two of them at the 1912 Olympic tournament, playing against Sweden and Austria. On 11 May 1913 he was one of nine US Pro Vercelli players in the national friendly against Belgium (1-0).
|1912 Summer||19||Stockholm||Football||Men's Football||Italy||ITA||9T|
|1912 Summer||19||Stockholm||Football||Italy||ITA||Final Standings||9T||1912-06-29||0||0||0|
|1912 Summer||19||Stockholm||Football||Italy||ITA||Consolation Round - Semi-Finals||Match #2||2||1912-07-03||AUT 5, ITA 1||0|
|1912 Summer||19||Stockholm||Football||Italy||ITA||Consolation Round - Round One||Match #3||1||1912-07-01||ITA 1, SWE 0||0|