What key details about a. s. valentine  can be extracted from the following bio?  Bio: a. s. valentine was an early professional football player for the allegheny athletic association . he served as the team 's quarterback in 1890 and 1891 . however , he jumped to the rival pittsburgh athletic club in 1892 . valentine played for pittsburgh in their first two games . then , without warning , he suddenly jumped back to the allegheny team . some pittsburgh a.c. members accused allegheny of enticing him back , while others charged he had all along been a spy for them . during allegheny 's two games against the pittsburgh a.c. that year , valentine played as a left halfback . in 1891 , he played in a game for shadyside academy as that team was defeated by the pittsburgh a.c. , 26 -- 0 . that same year , he scored a touchdown against the greensburg athletic association , during a 10 -- 5 allegheny win . during a game against the detroit athletic association on november 11 , 1893 , valentine reportedly openly punched detroit 's quarterback so openly . the officials ignored the incident , and the detroiter used the next play to retaliate against valentine . shortly after , a brawl between the two clubs erupted . allegheny would go on to win the game 18 -- 0 . in 1894 , during a game against the pittsburgh a.c. , valentine was thrown out of the game after coming to the aid of james van cleve during a fight against pittsburgh 's joe trees . after several appeals , valentine left the field reportedly `` crying like a baby '' by the local media . in 1895 , allegheny declined to field a team after learning of an investigation into the club by the amateur athletic union , over reports that the team had been secretly paying players . as a result , valentine became a referee . he officiated a game that year between the duquesne country and athletic club and greensburg . the game was filled with fights and arguments . valentine refused to return to the game for the second half .
The answer to this question is:
- fontcolor is white- teams is allegheny athletic association pittsburgh athletic club allegheny athletic association- position is quarterback , halfback- years is 1890 -- 1892 1892 1892 -- 1894- college is penn- name is a. s. valentine