Rheinschild was a Southern California native who had gone east to play football for Michigan. He was hired in April 1909 as head football coach at St. Vincent's.[2] He led St. Vincent's to an undefeated season and the football championship of Southern California in his one year as head coach. The Los Angeles Times praised Rheinschild's efforts in turning the St. Vincent's team into champions:
"Rheinschild has accomplished wonders with a squad which at the outset of the season appeared to be mediocre to an unusual degree. The Saints' athletic authorities are more than pleased with the success of 'Rheiny.' They expected the coach to clean up the Saint athletics and get a start for next year. 'Rheiny' did considerably more. He developed the strongest team the Saints ever had. And the eleven played clean ball too."[3]
In 1910, St. Vincent's withdrew from participation in intercollegiate athletics, opting to confine athletics to the Catholic student body.[4]